Pet Food Ingredients Encyclopedia

Every ingredient you'll find in commercial dog and cat food, explained from primary research and AAFCO 2024 / NRC 2006 / WSAVA 2018 guidance. 150 entries grouped into 26 clusters — from animal protein meals to controversial preservatives.

Animal Proteins & By-Products (10)

Meals, by-products, and hydrolyzed protein concentrates.

Animal Proteins & By-Products
Animal By Product Meal
Animal by-product meal is rendered from unspecified animal sources per AAFCO Official Publication 2024. Lower traceability than species-named meals (chicken …
Animal Proteins & By-Products
Beef Meal
Beef meal is a dry, concentrated protein-mineral powder produced by rendering beef tissue. Per AAFCO 2024 ingredient definition, beef meal must contain minim…
Animal Proteins & By-Products
Chicken By Product Meal
AAFCO defines chicken meal, chicken by-product meal, poultry by-product meal, and animal by-product meal as distinct ingredients. Named species are traceable…
Animal Proteins & By-Products
Chicken Meal
Chicken meal is rendered chicken (clean flesh, skin, with or without bone) at 63-65% crude protein. Per AAFCO Official Publication, distinct from chicken by-…
Animal Proteins & By-Products
Duck Meal
Duck meal is a dry, concentrated protein-mineral powder produced by rendering duck tissue (Anas platyrhynchos and Anas rubripes). Per AAFCO 2024 ingredient d…
Animal Proteins & By-Products
Fish Meal
Fish meal is a dry, concentrated protein-mineral powder produced by rendering whole fish or fish trimmings. Per AAFCO 2024 ingredient definition 60.59, generic
Animal Proteins & By-Products
Hydrolyzed Protein
Hydrolyzed protein has been enzymatically cleaved into peptides too small for IgE recognition. Per Olivry 2010 BMC and Cave 2006 J Nutr, target molecular wei…
Animal Proteins & By-Products
Lamb Meal
Lamb meal is dry rendered lamb (clean flesh + skin ± bone), 60-65% crude protein per AAFCO. Common base for novel-protein and limited-ingredient diets. Disti…
Animal Proteins & By-Products
Meat And Bone Meal
Meat and bone meal (MBM) is rendered mammalian tissue including bone, with minimum 4% phosphorus and Ca:P ratio not greater than 2.2:1 per AAFCO 2024. Per FD…
Animal Proteins & By-Products
Salmon Meal
Salmon meal is dry rendered salmon (whole fish + heads + frames), 60-65% crude protein per AAFCO. Distinct from generic 'fish meal' (species-variable) and fr…

Plant Proteins (4)

Concentrated proteins from peas, potatoes, soy, and corn gluten.

Plant Proteins
Corn Gluten Meal
Corn gluten meal is a 60% protein concentrate from wet-milled corn per AAFCO 2024. Per Hill 1996 J Nutr canine digestibility is 88-92%. It contributes amino …
Plant Proteins
Pea Protein
Pea protein is a kibble-tier marker linked to the FDA-CVM 2018-2022 grain-free DCM investigation. 1,382 reports through Nov 2022. Pulse-heavy diets remain un…
Plant Proteins
Potato Protein
Potato protein is a 75-85% crude protein concentrate extracted from Solanum tuberosum tuber waste streams via alkaline precipitation per Pots 1999 (J Sci Foo…
Plant Proteins
Soy Protein Isolate
Soy protein isolate is ≥90% protein on a dry-matter basis per AAFCO 2024 with 96-99% canine ileal digestibility per Hill 1996. Per Mueller 2016, soy is the 5…

Marine Oils (8)

Salmon, krill, sardine, anchovy, herring, and algae-derived oils.

Marine Oils
Algae Oil
Algae oil delivers EPA and DHA from microalgal sources (Schizochytrium, Crypthecodinium) — the same long-chain marine omega-3 fatty acids as fish oil but wit…
Marine Oils
Anchovy Oil
Anchovy oil is a marine omega-3 ingredient delivering EPA + DHA per Bauer 2008/2011 (JAVMA). Anchovies are short-life pelagic fish with the most-sustainable …
Marine Oils
Cod Liver Oil
Cod liver oil is from the liver of Atlantic cod (Gadus morhua). EPA + DHA composition is 10-15% per Bauer 2008. Unlike body-oil fish oils, cod liver oil cont…
Marine Oils
Herring Oil
Herring oil is extracted from Atlantic herring (Clupea harengus) and Pacific herring (Clupea pallasii) — small, lipid-rich pelagic forage fish. EPA + DHA com…
Marine Oils
Krill Oil
Krill oil delivers EPA and DHA bound to phospholipids rather than triglycerides, with naturally occurring astaxanthin. Per Burri 2012 Lipids, phospholipid om…
Marine Oils
Omega-3 Fatty Acids
Omega-3 fatty acids EPA and DHA from marine sources outperform ALA from flaxseed for canine inflammatory and cardiac applications. AAHA 2022 rates marine ome…
Marine Oils
Salmon Oil
Salmon oil delivers EPA and DHA, the long-chain omega-3 fatty acids most efficacious for canine osteoarthritis per AAHA 2022. Per Bauer 2011 JAVMA and Roush …
Marine Oils
Sardine Oil
Sardine oil delivers approximately 18% EPA + 12% DHA per Bauer 2011 JAVMA reference data, comparable to salmon oil. Per AAHA 2022 Pain Management Guidelines,…

Plant Oils (7)

Flax, canola, chia, perilla, camelina, hempseed, and sunflower.

Plant Oils
Camelina Oil
Camelina oil is cold-pressed seed oil from Camelina sativa (false flax, gold-of-pleasure) containing ~35-40% alpha-linolenic acid (ALA) plus gamma-tocopherol…
Plant Oils
Canola Oil
Canola oil is a low-erucic-acid rapeseed oil with a balanced lipid profile (62% monounsaturated, 21% omega-6 linoleic, 9% omega-3 ALA). FDA 21 CFR 184.1555 G…
Plant Oils
Chia Oil
Chia oil is a plant omega-3 ingredient delivering alpha-linolenic acid (ALA, 18:3n-3) — not the long-chain EPA + DHA that drive canine clinical benefit. Per …
Plant Oils
Flaxseed Oil
Flaxseed oil is a plant omega-3 source delivering alpha-linolenic acid (ALA). Per Bauer 2008 JAVMA, canine ALA-to-EPA conversion is under 5%, so flaxseed oil…
Plant Oils
Hempseed Oil
Hempseed oil is cold-pressed seed oil from Cannabis sativa L. (industrial hemp cultivar) containing ~15-20% ALA omega-3, ~50-60% LA omega-6, and ~3-5% gamma-…
Plant Oils
Perilla Oil
Perilla oil is a plant omega-3 ingredient from the East Asian herb Perilla frutescens, delivering alpha-linolenic acid (ALA, 18:3n-3) at 55-60% by weight per…
Plant Oils
Sunflower Oil
Sunflower oil is high-linoleic seed oil at 65-70% omega-6 in standard cultivars per USDA FoodData Central. Per Bauer 2011 JAVMA, linoleic acid supports skin …

Animal Fats (5)

Chicken, poultry, beef, lard, and turkey fats — palatability and energy.

Animal Fats
Beef Tallow
Beef tallow is rendered beef fat per AAFCO Official Publication 2024. Lipid profile is 50% saturated, 42% monounsaturated, 4% omega-6 linoleic, under 1% omeg…
Animal Fats
Chicken Fat
Chicken fat is a high-bioavailability energy source rich in linoleic acid (18-22% by weight). Per AAFCO Official Publication 2024 and NRC 2006 essential fatt…
Animal Fats
Lard
Lard is rendered pork fat per AAFCO 2024 with approximately 40% saturated, 45% monounsaturated, 11% omega-6 linoleic, and 1% omega-3 ALA per USDA FoodData Ce…
Animal Fats
Poultry Fat
Poultry fat is a species-anonymous rendered fat per AAFCO Official Publication 2024. Lipid profile is 30% saturated, 47% monounsaturated, 21% omega-6 linolei…
Animal Fats
Turkey Fat
Turkey fat is rendered fat from turkey tissue per AAFCO 2024, with approximately 30% saturated, 42% monounsaturated, 22% omega-6 linoleic, and 1.5% omega-3 A…

Specialty Fats (2)

Coconut oil and MCT oil — medium-chain triglycerides.

Specialty Fats
Coconut Oil
Coconut oil (Cocos nucifera) is a tropical fat source with distinctive medium-chain triglyceride (MCT) and lauric acid composition. Approximately 90% saturat…
Specialty Fats
MCT Oil
MCT (medium-chain triglyceride) oil bypasses normal fat digestion and is metabolized to ketones, an alternative brain fuel. Per Pan 2010 Br J Nutr and Robert…

Omega-3 Fatty Acids (3)

EPA, DHA, and DPA — the individual omega-3 fatty acid forms.

Omega-3 Fatty Acids
DHA
DHA (docosahexaenoic acid, 22:6n-3) is a 22-carbon long-chain omega-3 fatty acid concentrated in neural and retinal cell membrane phospholipid per Heinemann …
Omega-3 Fatty Acids
DPA
DPA (docosapentaenoic acid, 22:5 n-3) is the third long-chain omega-3 fatty acid alongside EPA and DHA. Per Holub 2009 review, DPA is found in fish oils at 1…
Omega-3 Fatty Acids
EPA
EPA (eicosapentaenoic acid, 20:5n-3) is a long-chain omega-3 fatty acid synthesized in marine algae and concentrated up the food chain into fish oils per Bau…

Preservatives & Natural Antioxidants (7)

Tocopherols, ascorbic acid, citric acid, BHA/BHT, ethoxyquin, rosemary, green tea.

Preservatives & Natural Antioxidants
Ascorbic Acid
Ascorbic acid (vitamin C) functions as both a water-soluble antioxidant preservative and a vitamin in pet food. Dogs and cats synthesize vitamin C endogenous…
Preservatives & Natural Antioxidants
BHA & BHT
BHA and BHT are synthetic antioxidant preservatives classified IARC Group 2B (possibly carcinogenic). FDA permits them in pet food; the US NTP 15th Report on…
Preservatives & Natural Antioxidants
Citric Acid
Citric acid is a water-soluble organic acid used in pet food as antioxidant, mineral chelator, and acidulant. AAFCO 2024-listed and FDA GRAS. Produced indust…
Preservatives & Natural Antioxidants
Ethoxyquin
Ethoxyquin is a synthetic antioxidant the EU banned in 2017 but the FDA still permits at 150 ppm in pet food (75 ppm voluntary cap). Used in fish meal preser…
Preservatives & Natural Antioxidants
Green Tea Extract
Green tea extract contains EGCG, a polyphenol antioxidant. Per Lambert 2010 (Chem Res Toxicol), high oral doses can cause hepatotoxicity. Pet food inclusion …
Preservatives & Natural Antioxidants
Mixed Tocopherols
Mixed tocopherols are a natural vitamin E-derived antioxidant blend used to replace synthetic preservatives BHA, BHT, and ethoxyquin in premium dog food. Tra…
Preservatives & Natural Antioxidants
Rosemary Extract
Rosemary extract is a natural antioxidant containing carnosic acid and rosmarinic acid. Per FDA 21 CFR 182 GRAS and AAFCO 2024, it is approved at typical pet…

Phosphates, Gums & Misc Additives (6)

STPP, SHMP, guar gum, xanthan gum, propylene glycol, menadione.

Phosphates, Gums & Misc Additives
Guar Gum
Guar gum is a galactomannan polysaccharide extracted from Cyamopsis tetragonoloba seed endosperm. 80-85% soluble fiber. 2:1 mannose:galactose ratio per Mudgi…
Phosphates, Gums & Misc Additives
Menadione
Menadione (vitamin K3 / MSBC) is a synthetic vitamin K source widely used in pet food. Per FDA regulation it is approved only for poultry feed; the AAFCO 202…
Phosphates, Gums & Misc Additives
Propylene Glycol
Propylene glycol is a humectant approved by FDA 21 CFR 582.1666 as GRAS for dogs but banned in cat food since 1996 due to Heinz body anemia per Christopher 1…
Phosphates, Gums & Misc Additives
Sodium Hexametaphosphate (SHMP)
Sodium hexametaphosphate (SHMP) is a calcium-chelating polyphosphate used as a dental anti-tartar coating on kibble surface. Per Stookey 2009 Am J Vet Res an…
Phosphates, Gums & Misc Additives
Sodium Tripolyphosphate (STPP)
Sodium tripolyphosphate (STPP) is a calcium-binding additive that reduces dental tartar formation. Per Hennet 2007 and Stookey 2009, STPP-containing diets an…
Phosphates, Gums & Misc Additives
Xanthan Gum
Xanthan gum is a heteropolysaccharide produced by Xanthomonas campestris bacterial fermentation per Garcia-Ochoa 2000 (Biotechnol Adv). 100% soluble fiber, p…

B-Vitamins (9)

Thiamine, riboflavin, niacin, B6, B12, folate, biotin, choline, pantothenic acid.

B-Vitamins
Biotin
Biotin (vitamin B7) is an essential B-vitamin per NRC 2006 — but per AAFCO 2024, biotin is NOT required to be added to dog food because gut microbiota synthe…
B-Vitamins
Choline
Choline is an essential nutrient in dogs per NRC 2006 / AAFCO 2024 — required minimum 1,360 mg/kg DM in adult formulations. Per Pan 2010, choline is part of …
B-Vitamins
Cobalamin
Cobalamin (vitamin B12) is an essential B-vitamin per NRC 2006 and AAFCO 2024. Critically, serum cobalamin is the most-used diagnostic marker in canine GI me…
B-Vitamins
Folate
Folate (vitamin B9) is a water-soluble essential vitamin in one-carbon transfer reactions (DNA synthesis, methylation, methionine cycle) per Bailey 2010. AAF…
B-Vitamins
Niacin
Niacin (vitamin B3) is an essential B-vitamin per NRC 2006 and AAFCO 2024 — required for NAD/NADP coenzyme synthesis. Per Carvalho 1971, dogs (unlike cats) c…
B-Vitamins
Pantothenic Acid
Pantothenic acid (vitamin B5) is a water-soluble essential vitamin and the precursor to coenzyme A and the acyl carrier protein per Smith 1987. AAFCO 2024 do…
B-Vitamins
Pyridoxine
Pyridoxine (vitamin B6) is a water-soluble essential vitamin and the dietary precursor to pyridoxal 5-phosphate (PLP), the coenzyme for over 100 enzymes in a…
B-Vitamins
Riboflavin
Riboflavin (vitamin B2) is a water-soluble essential vitamin that forms the coenzymes FAD and FMN per Powers 2003. AAFCO 2024 dog food minimum is 5.2 mg/kg D…
B-Vitamins
Thiamine
Thiamine (vitamin B1) is a heat-labile essential cofactor for carbohydrate metabolism. AAFCO 2024 dog food nutrient profile minimum is 2.25 mg/kg DM. Deficie…

Fat-Soluble Vitamins (4)

Vitamins A, D, E (tocopherols), and K (menaquinones).

Fat-Soluble Vitamins
Vitamin A
Vitamin A is an essential fat-soluble vitamin in dogs and cats supplied as pre-formed retinol (animal sources), retinyl esters (animal sources), or carotenoi…
Fat-Soluble Vitamins
Vitamin D
Vitamin D (calciferol) is an essential fat-soluble vitamin in dogs and cats; both species cannot synthesize adequate cholecalciferol from cutaneous UVB expos…
Fat-Soluble Vitamins
Vitamin E Forms
Vitamin E is a family of 8 fat-soluble compounds — 4 tocopherols (α/β/γ/δ) and 4 tocotrienols. Per NRC 2006 / AAFCO 2024, alpha-tocopherol is the nutritional…
Fat-Soluble Vitamins
Vitamin K (Menaquinones)
Vitamin K is a family — K1 phylloquinone (plant), K2 menaquinones MK-4 to MK-13 (animal/microbial), K3 menadione (synthetic). Per AAFCO 2024 menadione expert…

Macrominerals (5)

Calcium, phosphorus salts, potassium, and magnesium.

Macrominerals
Calcium
Calcium is an essential macromineral in dogs and cats supplied as calcium carbonate, dicalcium phosphate, calcium phosphate, calcium lactate, or bone-source …
Macrominerals
Calcium Carbonate
Calcium carbonate (CaCO3) supplies 40% elemental calcium with no phosphorus contribution. Limestone-derived per USGS. AAFCO 2024 canine Ca 0.5-2.5% range. Bi…
Macrominerals
Dicalcium Phosphate
Dicalcium phosphate (CaHPO4) is a combined calcium-phosphorus mineral premix supplying ~22-28% Ca and 17-19% P. AAFCO 2024 canine maintenance Ca 0.5-2.5% / P…
Macrominerals
Magnesium
Magnesium is an essential macromineral for dogs and cats — AAFCO 2024 canine adult minimum 0.06% dry matter, feline 0.04%. Cofactor for 300+ enzymes per Sari…
Macrominerals
Potassium Chloride
Potassium chloride (KCl) supplies 52% elemental potassium and 48% chloride. AAFCO 2024 canine maintenance K minimum 0.6% on dry-matter basis. Hypokalemia ris…

Trace Minerals (8)

Zinc, iron, copper, selenium, manganese, chromium, iodine, kelp.

Trace Minerals
Chromium
Chromium (Cr3+) is a trace mineral with putative insulin-sensitivity-enhancing role per Anderson 2008 (J Nutr) glucose tolerance factor review. AAFCO 2024 ha…
Trace Minerals
Copper Supplements
Copper is essential at 7.3 mg/kg DM minimum per AAFCO 2024 — but copper-associated hepatopathy in Bedlington Terriers (Twedt 1979 COMMD1 mutation), Labrador …
Trace Minerals
Iodine
Iodine is an essential trace mineral required for thyroid hormone (T3/T4) synthesis per Roti 1991 (Endocr Rev). AAFCO 2024 canine adult minimum 1.0 mg per kg…
Trace Minerals
Iron Supplements
Iron is essential per NRC 2006 / AAFCO 2024 (80 mg/kg DM minimum adult). Per Hurrell 2010, heme iron (animal-source) achieves 15-35% bioavailability vs 2-20%…
Trace Minerals
Kelp
Kelp (large brown seaweed species, Phaeophyceae) is a mineral and iodine source in pet food. Iodine content highly variable: 300-7,000 mg/kg dry weight per F…
Trace Minerals
Manganese
Manganese is an essential trace mineral per NRC 2006 and AAFCO 2024 dog food nutrient profiles — required for bone development, cartilage formation, and enzy…
Trace Minerals
Selenium
Selenium is an essential trace mineral per NRC 2006 and AAFCO 2024 dog food nutrient profiles — required as a cofactor for glutathione peroxidase (GPx) antio…
Trace Minerals
Zinc Supplements
Zinc is essential per NRC 2006 / AAFCO 2024 (80 mg/kg DM minimum adult). Form matters: zinc proteinate, methionine, or chelate (organic) is 1.5–2× more bioav…

Amino Acids & Derivatives (5)

L-carnitine, acetyl-L-carnitine, taurine, creatine, glycine.

Amino Acids & Derivatives
Acetyl-L-Carnitine
Acetyl-L-carnitine (ALC) is the acetylated derivative of L-carnitine. The acetyl group makes ALC more readily blood-brain-barrier permeable per Pettegrew 200…
Amino Acids & Derivatives
Creatine
Creatine is an amino-acid-derived compound (methylguanidinoacetic acid) endogenous to mammalian metabolism via arginine-glycine-methionine biosynthesis. Phos…
Amino Acids & Derivatives
Glycine
Glycine is the simplest amino acid (C2H5NO2), classically non-essential but conditionally essential in injury, sepsis, and rapid growth per Wang 2013 (Amino …
Amino Acids & Derivatives
L-Carnitine
L-carnitine is a fatty-acid transport cofactor used in canine weight-management and cardiac diets. Gross 1998 Royal Canin study: 50 ppm preserves lean mass d…
Amino Acids & Derivatives
Taurine
Taurine is essential for cats and conditionally essential for some dogs. Per AAFCO Cat Food Nutrient Profiles, dry food must supply 0.1% taurine; canned, 0.2…

Joint Support & Cartilage (6)

Glucosamine, chondroitin, MSM, boswellia, green-lipped mussel.

Joint Support & Cartilage
Boswellia
Boswellia serrata (Indian frankincense) gum-resin contains boswellic acids — principally 11-keto-beta-boswellic acid (KBA) and acetyl-11-keto-beta-boswellic …
Joint Support & Cartilage
Chondroitin
Chondroitin sulfate is a glycosaminoglycan marketed for joint support, paired most often with glucosamine. AAHA 2022 Pain Management Guidelines rate the evid…
Joint Support & Cartilage
Glucosamine
Glucosamine is a marketed joint-support nutraceutical, not a complete-and-balanced nutrient. AAHA 2022 rates it an adjunct with weak evidence; omega-3 is mor…
Joint Support & Cartilage
Glucosamine Forms
Glucosamine sulfate, glucosamine HCl, and N-acetyl-glucosamine differ in counter-ion and bioavailability. Per Adebowale 2002 oral absorption is comparable; p…
Joint Support & Cartilage
Green Lipped Mussel
Green-lipped mussel (Perna canaliculus, native to New Zealand) supplies glycosaminoglycans (chondroitin sulfate, glucosamine, hyaluronic acid) plus marine om…
Joint Support & Cartilage
MSM
MSM is a sulfur-containing nutraceutical marketed for joint support. NIH classifies oral MSM as 'possibly effective' for human osteoarthritis; canine evidenc…

Carotenoids & Advanced Antioxidants (6)

Beta-carotene, astaxanthin, lutein, zeaxanthin, CoQ10.

Carotenoids & Advanced Antioxidants
Astaxanthin
Astaxanthin is a xanthophyll carotenoid with exceptional antioxidant capacity (~10x beta-carotene, ~100x alpha-tocopherol per Park 2010 Mar Drugs). Industria…
Carotenoids & Advanced Antioxidants
Beta Carotene
Beta-carotene is a plant-derived carotenoid that dogs partially convert to vitamin A (retinol). Unlike cats (obligate carnivores who cannot convert per Criss…
Carotenoids & Advanced Antioxidants
CoQ10
Coenzyme Q10 (ubiquinone-10) is a mitochondrial electron-transport-chain cofactor with cardiovascular and neuroprotective evidence per ACVIM 2022 nutritional…
Carotenoids & Advanced Antioxidants
CoQ10 Forms
CoQ10 exists in two interconvertible redox forms — ubiquinone (oxidized) and ubiquinol (reduced, active form per Bhagavan 2006 Free Radic Res). Per Hosoe 200…
Carotenoids & Advanced Antioxidants
Lutein
Lutein is a xanthophyll carotenoid concentrated in the retinal macula per Krinsky 2003 — distinct from beta-carotene (which dogs can convert to vitamin A) be…
Carotenoids & Advanced Antioxidants
Zeaxanthin
Zeaxanthin is a xanthophyll carotenoid and the stereoisomer of lutein — together they form the retinal macular pigment per Krinsky 2003 (Annu Rev Nutr). Zeax…

Grains & Carbohydrates (11)

Brown rice, oats, barley, quinoa, sorghum, tapioca, potato, millet, pumpkin.

Grains & Carbohydrates
Barley
Barley (Hordeum vulgare, pearled or whole-grain) is the lowest-glycemic-index commercial grain in pet food. GI ~25-30 per Atkinson 2008. Contains 3-7% beta-g…
Grains & Carbohydrates
Brewers Rice
Brewers rice is the small milled fragments separated during whole-rice processing. Recognized as a dog food ingredient by AAFCO since 1960. Nutritionally nea…
Grains & Carbohydrates
Brown Rice
Brown rice (Oryza sativa with bran and germ intact) is a moderate-glycemic complex-carbohydrate source in pet food. Provides 75% starch, 3% fiber, B vitamins…
Grains & Carbohydrates
Millet
Millet is a gluten-free cereal grain group encompassing pearl millet (Pennisetum glaucum), foxtail millet (Setaria italica), and other Poaceae species per Sa…
Grains & Carbohydrates
Oats
Oats (Avena sativa, whole grain or oat groats) are a complex-carbohydrate source providing 60% starch, 11% protein, 7% fat, and 10% fiber per USDA FoodData C…
Grains & Carbohydrates
Pumpkin
Pumpkin (Cucurbita species, plain canned or pureed) is a low-calorie soluble + insoluble fiber source widely used in pet food and home supplementation. Provi…
Grains & Carbohydrates
Quinoa
Quinoa (Chenopodium quinoa) is a pseudo-cereal seed used as a gluten-free carbohydrate source in pet food. Provides 64% starch, 14% protein with complete ess…
Grains & Carbohydrates
Sorghum
Sorghum (Sorghum bicolor) is a mid-glycemic gluten-free cereal grain. 75% starch, 11% protein, 2% fat per USDA FoodData Central. GI ~62 per Atkinson 2008. Dr…
Grains & Carbohydrates
Sweet Potato
Sweet potato (Ipomoea batatas) is a starchy tuber used as a carbohydrate source in grain-free and limited-ingredient pet food formulations. Provides 20% comp…
Grains & Carbohydrates
Tapioca
Tapioca is extracted starch from Manihot esculenta (cassava) root, 88% starch on dry-matter basis. GI ~70 per Atkinson 2008. Cyanogenic glycoside processing …
Grains & Carbohydrates
White Potato
White potato (Solanum tuberosum) is a high-glycemic-index starchy tuber. GI 85+ per Atkinson 2008 (Diabetes Care). 80% starch, 2% protein, trace fat on dry-m…

Pulse Legumes (3)

Peas, lentils, chickpeas — and the FDA-CVM DCM investigation context.

Pulse Legumes
Chickpeas
Chickpeas (Cicer arietinum, garbanzo beans) are Fabaceae pulse legumes supplying ~19% protein, soluble fiber, B vitamins, and minerals per USDA FoodData Cent…
Pulse Legumes
Lentils
Lentils (Lens culinaris) are Fabaceae pulse legumes supplying ~25% protein, soluble fiber, B vitamins, and iron per USDA FoodData Central. Implicated in FDA …
Pulse Legumes
Peas
Peas (Pisum sativum) are Fabaceae pulse legumes supplying ~22% protein, fiber, B vitamins, and minerals per USDA FoodData Central. Distinct from pea-protein …

Whole Vegetables (4)

Spinach, carrots, parsley, alfalfa.

Whole Vegetables
Alfalfa
Alfalfa (Medicago sativa) is a legume forage providing 18-20% protein, vitamin K1, beta-carotene, calcium, and trace minerals. Saponin content 2-4% per Stoch…
Whole Vegetables
Carrots
Carrots (Daucus carota) are an Apiaceae root vegetable supplying beta-carotene, fiber, biotin, and vitamin K1 per USDA FoodData Central. Beta-carotene-to-ret…
Whole Vegetables
Parsley
Parsley (Petroselinum crispum) is an Apiaceae herb supplying vitamin K1, vitamin C, and chlorophyll per USDA FoodData Central. Curly-leaf and Italian flat-le…
Whole Vegetables
Spinach
Spinach (Spinacia oleracea) is a leafy green Amaranthaceae vegetable supplying vitamin K, iron, magnesium, folate, and lutein per USDA FoodData Central. Oxal…

Whole Fruits (3)

Blueberries, cranberries, apples — polyphenol antioxidant sources.

Whole Fruits
Apples
Apples (Malus domestica) are Rosaceae fruits supplying soluble fiber (pectin), vitamin C, and modest polyphenols per USDA FoodData Central. Seeds contain amy…
Whole Fruits
Blueberries
Blueberries (Vaccinium spp.) are Ericaceae fruits supplying anthocyanins, vitamin C, vitamin K1, and manganese per USDA FoodData Central. Anthocyanin antioxi…
Whole Fruits
Cranberries
Cranberries (Vaccinium macrocarpon) are Ericaceae fruits supplying type-A proanthocyanidins (PACs) marketed for urinary tract health per Howell 2010 (Crit Re…

Fiber & Prebiotics (6)

Inulin, FOS, MOS, agave inulin, Jerusalem artichoke — fermentable fibers.

Fiber & Prebiotics
Agave Inulin
Agave inulin is extracted from blue agave (Agave tequilana) and other agave species. Unlike chicory-derived inulin which is linear, agave fructans are branch…
Fiber & Prebiotics
FOS
FOS (fructooligosaccharides) is a short-chain plant-derived prebiotic fiber fermented to short-chain fatty acids by Bifidobacterium and Lactobacillus. Per Su…
Fiber & Prebiotics
Inulin
Inulin is a long-chain fructan (DP 11-60+) prebiotic fiber from chicory root. Per Sunvold 1995 J Anim Sci, canine colonic fermentation is slower and reaches …
Fiber & Prebiotics
Jerusalem Artichoke
Jerusalem artichoke (Helianthus tuberosus) is a sunflower-relative tuber containing 14-19% inulin by fresh weight per Kaur 2002 Crit Rev Food Sci Nutr. AAFCO…
Fiber & Prebiotics
MOS
MOS (mannan-oligosaccharides) is a yeast cell wall extract derived from Saccharomyces cerevisiae. Per Stuyven 2009 Vet Immunol Immunopathol, MOS binds Type 1…
Fiber & Prebiotics
Prebiotics
Prebiotics are non-digestible plant carbohydrates that selectively feed beneficial gut bacteria. FOS (fructooligosaccharides), MOS (mannan-oligosaccharides),…

Probiotic Strains (8)

Lactobacillus, Bifidobacterium, Enterococcus, Bacillus, Pediococcus, Saccharomyces.

Probiotic Strains
Bacillus subtilis
Bacillus subtilis is a spore-forming gram-positive bacterium used as a direct-fed microbial (DFM) in canine probiotics. Per Cutting 2011, spore stability sur…
Probiotic Strains
Bifidobacterium animalis
Bifidobacterium animalis subsp. lactis (often listed as B. lactis or strain BB-12) is a gut-resident probiotic studied in canine acute and chronic enteropath…
Probiotic Strains
Enterococcus faecium
Enterococcus faecium SF68 (NCIMB 10415) is the probiotic strain in Purina Pro Plan FortiFlora, with the strongest canine evidence base per Bybee 2011 JVIM. M…
Probiotic Strains
Lactobacillus acidophilus
Lactobacillus acidophilus is a lactic-acid-producing probiotic with low-to-moderate canine GI evidence per AAHA 2022 and ACVIM 2022. Mechanism, AAFCO 2024 DF…
Probiotic Strains
Lactobacillus plantarum
Lactobacillus plantarum is a non-spore-forming gram-positive lactic-acid bacterium used as a direct-fed microbial in canine probiotics. Per Manninen 2006 (J …
Probiotic Strains
Lactobacillus rhamnosus
Lactobacillus rhamnosus is a gram-positive lactic acid bacterium — the LGG strain (rhamnosus GG, per Goldin 1992) is the most-studied human probiotic. Per AA…
Probiotic Strains
Pediococcus acidilactici
Pediococcus acidilactici is a gram-positive, homofermentative lactic-acid bacterium used as a direct-fed microbial in canine probiotics. Per Strompfova 2010 …
Probiotic Strains
Saccharomyces boulardii
Saccharomyces boulardii is a non-pathogenic yeast probiotic — the only commercial canine probiotic that is not a bacterium. Per Aktas 2007 (Acta Vet Brno) ca…

Yeasts & Cellular Nutrients (4)

Brewers yeast, nutritional yeast, lecithin, egg product.

Yeasts & Cellular Nutrients
Brewers Yeast
Brewers yeast is dried Saccharomyces cerevisiae from beer brewing per AAFCO 2024. It supplies B-complex vitamins and 45% crude protein. The flea-repellent cl…
Yeasts & Cellular Nutrients
Egg Product
Egg product is dried whole egg (yolk + white) with PDCAAS biological value approaching 1.00, the gold-standard reference per FAO 2013. ~48% protein dry matte…
Yeasts & Cellular Nutrients
Lecithin
Lecithin is a phospholipid mixture (primarily phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol) extracted from soybean (most common) or su…
Yeasts & Cellular Nutrients
Nutritional Yeast
Nutritional yeast is deactivated Saccharomyces cerevisiae cultivated as a primary food ingredient. Per AAFCO 2024, it differs from brewers yeast (a brewing b…

Botanical & Specialty Nutraceuticals (2)

Milk thistle and SAMe — liver-support nutraceuticals.

Botanical & Specialty Nutraceuticals
Milk Thistle
Milk thistle (Silybum marianum) and its silymarin/silybin fractions are a hepatic adjunct in canine medicine. Per Vandeweerd 2013 systematic review and Webb …
Botanical & Specialty Nutraceuticals
SAMe
SAMe (S-adenosyl-L-methionine) is a methyl donor and glutathione precursor used as a hepatic and cognitive adjunct in dogs. Per Center 2005 JAVMA, oral SAMe …

Controversial Ingredients (13)

Garlic, tomato pomace, pomegranate, carrageenan, beet pulp, cellulose, corn, soy, wheat, gluten, yucca, turmeric, ginger.

Controversial Ingredients
Beet Pulp
Beet pulp is a moderately fermentable fiber source from sugar-beet processing. Sunvold 1995 classification, SCFA production (butyrate, acetate, propionate), …
Controversial Ingredients
Carrageenan
Carrageenan is a red-seaweed-derived thickener used in wet pet food. The FDA classifies food-grade undegraded carrageenan as Generally Recognized as Safe. Th…
Controversial Ingredients
Cellulose
Cellulose in dog food is purified plant fiber. AAFCO has recognized powdered cellulose as a feed ingredient since 1940. Hill's R/D and Metabolic formulas use…
Controversial Ingredients
Corn
Corn in dog food is not a filler. AAFCO data places ground corn at 86-89% digestibility. Mueller 2016 places true corn allergy below 0.4% of confirmed canine…
Controversial Ingredients
Garlic
Garlic (Allium sativum) is an Amaryllidaceae bulb containing thiosulfate organosulfur compounds (allicin, allyl propyl disulfide) toxic to dogs at high dose …
Controversial Ingredients
Ginger
Ginger (Zingiber officinale rhizome) contains gingerols and shogaols with 5-HT3 antagonist activity per Holtmann 2009 (Aliment Pharmacol Ther). Anti-emetic p…
Controversial Ingredients
Pomegranate
Pomegranate (Punica granatum) is a Lythraceae fruit supplying ellagitannins (punicalagin, punicalin) per Aviram 2008 (Am J Clin Nutr). Gut microbiome-derived…
Controversial Ingredients
Soy
Soy in dog food is a complete plant protein. Soybean meal runs 44-48% crude protein per AAFCO. Mueller 2016 places soy at 6% of confirmed canine allergies. P…
Controversial Ingredients
Tomato Pomace
Tomato pomace (Solanum lycopersicum) is the residual skins, seeds, and pulp from tomato juice and paste production per AAFCO 2024. Supplies lycopene (5-50 mg…
Controversial Ingredients
Turmeric
Turmeric contains curcumin, an anti-inflammatory polyphenol with weak oral bioavailability. Per Innes 2017 and Comblain 2017, evidence for curcumin in canine…
Controversial Ingredients
Wheat
Wheat in dog food is digestible at 90%+ per AAFCO. Mueller 2016 places wheat at 13% of confirmed canine allergies. Gluten-sensitive enteropathy is a document…
Controversial Ingredients
Wheat Gluten
Wheat gluten is an 80% protein concentrate from wet-milled wheat per AAFCO 2024. Per Hall 1992 Vet Rec gluten enteropathy is documented in Irish Setters as a…
Controversial Ingredients
Yucca Schidigera
Yucca schidigera is a Mojave-desert plant extract added to dog food primarily for stool odor reduction. Active compounds are steroidal saponins binding ammon…

Regulatory Standards (1)

AAFCO substantiation methods — formulation vs feeding trial.

Regulatory Standards
AAFCO Statement
The AAFCO statement on a pet food label tells you (a) whether it is complete and balanced, (b) which life stage, and (c) how that was substantiated — formula…
Regulatory Standards
AAFCO Statement
The AAFCO statement on a pet food label tells you (a) whether it is complete and balanced, (b) which life stage, and (c) how that was substantiated — formula…
Amino Acids & Derivatives
Acetyl-L-Carnitine
Acetyl-L-carnitine (ALC) is the acetylated derivative of L-carnitine. The acetyl group makes ALC more readily blood-brain-barrier permeable per Pettegrew 200…
Fiber & Prebiotics
Agave Inulin
Agave inulin is extracted from blue agave (Agave tequilana) and other agave species. Unlike chicory-derived inulin which is linear, agave fructans are branch…
Whole Vegetables
Alfalfa
Alfalfa (Medicago sativa) is a legume forage providing 18-20% protein, vitamin K1, beta-carotene, calcium, and trace minerals. Saponin content 2-4% per Stoch…
Marine Oils
Algae Oil
Algae oil delivers EPA and DHA from microalgal sources (Schizochytrium, Crypthecodinium) — the same long-chain marine omega-3 fatty acids as fish oil but wit…
Marine Oils
Anchovy Oil
Anchovy oil is a marine omega-3 ingredient delivering EPA + DHA per Bauer 2008/2011 (JAVMA). Anchovies are short-life pelagic fish with the most-sustainable …
Animal Proteins & By-Products
Animal By Product Meal
Animal by-product meal is rendered from unspecified animal sources per AAFCO Official Publication 2024. Lower traceability than species-named meals (chicken …
Whole Fruits
Apples
Apples (Malus domestica) are Rosaceae fruits supplying soluble fiber (pectin), vitamin C, and modest polyphenols per USDA FoodData Central. Seeds contain amy…
Preservatives & Natural Antioxidants
Ascorbic Acid
Ascorbic acid (vitamin C) functions as both a water-soluble antioxidant preservative and a vitamin in pet food. Dogs and cats synthesize vitamin C endogenous…
Carotenoids & Advanced Antioxidants
Astaxanthin
Astaxanthin is a xanthophyll carotenoid with exceptional antioxidant capacity (~10x beta-carotene, ~100x alpha-tocopherol per Park 2010 Mar Drugs). Industria…
Probiotic Strains
Bacillus subtilis
Bacillus subtilis is a spore-forming gram-positive bacterium used as a direct-fed microbial (DFM) in canine probiotics. Per Cutting 2011, spore stability sur…
Grains & Carbohydrates
Barley
Barley (Hordeum vulgare, pearled or whole-grain) is the lowest-glycemic-index commercial grain in pet food. GI ~25-30 per Atkinson 2008. Contains 3-7% beta-g…
Animal Proteins & By-Products
Beef Meal
Beef meal is a dry, concentrated protein-mineral powder produced by rendering beef tissue. Per AAFCO 2024 ingredient definition, beef meal must contain minim…
Animal Fats
Beef Tallow
Beef tallow is rendered beef fat per AAFCO Official Publication 2024. Lipid profile is 50% saturated, 42% monounsaturated, 4% omega-6 linoleic, under 1% omeg…
Controversial Ingredients
Beet Pulp
Beet pulp is a moderately fermentable fiber source from sugar-beet processing. Sunvold 1995 classification, SCFA production (butyrate, acetate, propionate), …
Carotenoids & Advanced Antioxidants
Beta Carotene
Beta-carotene is a plant-derived carotenoid that dogs partially convert to vitamin A (retinol). Unlike cats (obligate carnivores who cannot convert per Criss…
Preservatives & Natural Antioxidants
BHA & BHT
BHA and BHT are synthetic antioxidant preservatives classified IARC Group 2B (possibly carcinogenic). FDA permits them in pet food; the US NTP 15th Report on…
Probiotic Strains
Bifidobacterium animalis
Bifidobacterium animalis subsp. lactis (often listed as B. lactis or strain BB-12) is a gut-resident probiotic studied in canine acute and chronic enteropath…
B-Vitamins
Biotin
Biotin (vitamin B7) is an essential B-vitamin per NRC 2006 — but per AAFCO 2024, biotin is NOT required to be added to dog food because gut microbiota synthe…
Whole Fruits
Blueberries
Blueberries (Vaccinium spp.) are Ericaceae fruits supplying anthocyanins, vitamin C, vitamin K1, and manganese per USDA FoodData Central. Anthocyanin antioxi…
Joint Support & Cartilage
Boswellia
Boswellia serrata (Indian frankincense) gum-resin contains boswellic acids — principally 11-keto-beta-boswellic acid (KBA) and acetyl-11-keto-beta-boswellic …
Grains & Carbohydrates
Brewers Rice
Brewers rice is the small milled fragments separated during whole-rice processing. Recognized as a dog food ingredient by AAFCO since 1960. Nutritionally nea…
Yeasts & Cellular Nutrients
Brewers Yeast
Brewers yeast is dried Saccharomyces cerevisiae from beer brewing per AAFCO 2024. It supplies B-complex vitamins and 45% crude protein. The flea-repellent cl…
Grains & Carbohydrates
Brown Rice
Brown rice (Oryza sativa with bran and germ intact) is a moderate-glycemic complex-carbohydrate source in pet food. Provides 75% starch, 3% fiber, B vitamins…
Macrominerals
Calcium
Calcium is an essential macromineral in dogs and cats supplied as calcium carbonate, dicalcium phosphate, calcium phosphate, calcium lactate, or bone-source …
Macrominerals
Calcium Carbonate
Calcium carbonate (CaCO3) supplies 40% elemental calcium with no phosphorus contribution. Limestone-derived per USGS. AAFCO 2024 canine Ca 0.5-2.5% range. Bi…
Plant Oils
Camelina Oil
Camelina oil is cold-pressed seed oil from Camelina sativa (false flax, gold-of-pleasure) containing ~35-40% alpha-linolenic acid (ALA) plus gamma-tocopherol…
Plant Oils
Canola Oil
Canola oil is a low-erucic-acid rapeseed oil with a balanced lipid profile (62% monounsaturated, 21% omega-6 linoleic, 9% omega-3 ALA). FDA 21 CFR 184.1555 G…
Controversial Ingredients
Carrageenan
Carrageenan is a red-seaweed-derived thickener used in wet pet food. The FDA classifies food-grade undegraded carrageenan as Generally Recognized as Safe. Th…
Whole Vegetables
Carrots
Carrots (Daucus carota) are an Apiaceae root vegetable supplying beta-carotene, fiber, biotin, and vitamin K1 per USDA FoodData Central. Beta-carotene-to-ret…
Controversial Ingredients
Cellulose
Cellulose in dog food is purified plant fiber. AAFCO has recognized powdered cellulose as a feed ingredient since 1940. Hill's R/D and Metabolic formulas use…
Plant Oils
Chia Oil
Chia oil is a plant omega-3 ingredient delivering alpha-linolenic acid (ALA, 18:3n-3) — not the long-chain EPA + DHA that drive canine clinical benefit. Per …
Animal Proteins & By-Products
Chicken By Product Meal
AAFCO defines chicken meal, chicken by-product meal, poultry by-product meal, and animal by-product meal as distinct ingredients. Named species are traceable…
Animal Fats
Chicken Fat
Chicken fat is a high-bioavailability energy source rich in linoleic acid (18-22% by weight). Per AAFCO Official Publication 2024 and NRC 2006 essential fatt…
Animal Proteins & By-Products
Chicken Meal
Chicken meal is rendered chicken (clean flesh, skin, with or without bone) at 63-65% crude protein. Per AAFCO Official Publication, distinct from chicken by-…
Pulse Legumes
Chickpeas
Chickpeas (Cicer arietinum, garbanzo beans) are Fabaceae pulse legumes supplying ~19% protein, soluble fiber, B vitamins, and minerals per USDA FoodData Cent…
B-Vitamins
Choline
Choline is an essential nutrient in dogs per NRC 2006 / AAFCO 2024 — required minimum 1,360 mg/kg DM in adult formulations. Per Pan 2010, choline is part of …
Joint Support & Cartilage
Chondroitin
Chondroitin sulfate is a glycosaminoglycan marketed for joint support, paired most often with glucosamine. AAHA 2022 Pain Management Guidelines rate the evid…
Trace Minerals
Chromium
Chromium (Cr3+) is a trace mineral with putative insulin-sensitivity-enhancing role per Anderson 2008 (J Nutr) glucose tolerance factor review. AAFCO 2024 ha…
Preservatives & Natural Antioxidants
Citric Acid
Citric acid is a water-soluble organic acid used in pet food as antioxidant, mineral chelator, and acidulant. AAFCO 2024-listed and FDA GRAS. Produced indust…
B-Vitamins
Cobalamin
Cobalamin (vitamin B12) is an essential B-vitamin per NRC 2006 and AAFCO 2024. Critically, serum cobalamin is the most-used diagnostic marker in canine GI me…
Specialty Fats
Coconut Oil
Coconut oil (Cocos nucifera) is a tropical fat source with distinctive medium-chain triglyceride (MCT) and lauric acid composition. Approximately 90% saturat…
Marine Oils
Cod Liver Oil
Cod liver oil is from the liver of Atlantic cod (Gadus morhua). EPA + DHA composition is 10-15% per Bauer 2008. Unlike body-oil fish oils, cod liver oil cont…
Trace Minerals
Copper Supplements
Copper is essential at 7.3 mg/kg DM minimum per AAFCO 2024 — but copper-associated hepatopathy in Bedlington Terriers (Twedt 1979 COMMD1 mutation), Labrador …
Carotenoids & Advanced Antioxidants
CoQ10
Coenzyme Q10 (ubiquinone-10) is a mitochondrial electron-transport-chain cofactor with cardiovascular and neuroprotective evidence per ACVIM 2022 nutritional…
Carotenoids & Advanced Antioxidants
CoQ10 Forms
CoQ10 exists in two interconvertible redox forms — ubiquinone (oxidized) and ubiquinol (reduced, active form per Bhagavan 2006 Free Radic Res). Per Hosoe 200…
Controversial Ingredients
Corn
Corn in dog food is not a filler. AAFCO data places ground corn at 86-89% digestibility. Mueller 2016 places true corn allergy below 0.4% of confirmed canine…
Plant Proteins
Corn Gluten Meal
Corn gluten meal is a 60% protein concentrate from wet-milled corn per AAFCO 2024. Per Hill 1996 J Nutr canine digestibility is 88-92%. It contributes amino …
Whole Fruits
Cranberries
Cranberries (Vaccinium macrocarpon) are Ericaceae fruits supplying type-A proanthocyanidins (PACs) marketed for urinary tract health per Howell 2010 (Crit Re…
Amino Acids & Derivatives
Creatine
Creatine is an amino-acid-derived compound (methylguanidinoacetic acid) endogenous to mammalian metabolism via arginine-glycine-methionine biosynthesis. Phos…
Omega-3 Fatty Acids
DHA
DHA (docosahexaenoic acid, 22:6n-3) is a 22-carbon long-chain omega-3 fatty acid concentrated in neural and retinal cell membrane phospholipid per Heinemann …
Macrominerals
Dicalcium Phosphate
Dicalcium phosphate (CaHPO4) is a combined calcium-phosphorus mineral premix supplying ~22-28% Ca and 17-19% P. AAFCO 2024 canine maintenance Ca 0.5-2.5% / P…
Omega-3 Fatty Acids
DPA
DPA (docosapentaenoic acid, 22:5 n-3) is the third long-chain omega-3 fatty acid alongside EPA and DHA. Per Holub 2009 review, DPA is found in fish oils at 1…
Animal Proteins & By-Products
Duck Meal
Duck meal is a dry, concentrated protein-mineral powder produced by rendering duck tissue (Anas platyrhynchos and Anas rubripes). Per AAFCO 2024 ingredient d…
Yeasts & Cellular Nutrients
Egg Product
Egg product is dried whole egg (yolk + white) with PDCAAS biological value approaching 1.00, the gold-standard reference per FAO 2013. ~48% protein dry matte…
Probiotic Strains
Enterococcus faecium
Enterococcus faecium SF68 (NCIMB 10415) is the probiotic strain in Purina Pro Plan FortiFlora, with the strongest canine evidence base per Bybee 2011 JVIM. M…
Omega-3 Fatty Acids
EPA
EPA (eicosapentaenoic acid, 20:5n-3) is a long-chain omega-3 fatty acid synthesized in marine algae and concentrated up the food chain into fish oils per Bau…
Preservatives & Natural Antioxidants
Ethoxyquin
Ethoxyquin is a synthetic antioxidant the EU banned in 2017 but the FDA still permits at 150 ppm in pet food (75 ppm voluntary cap). Used in fish meal preser…
Animal Proteins & By-Products
Fish Meal
Fish meal is a dry, concentrated protein-mineral powder produced by rendering whole fish or fish trimmings. Per AAFCO 2024 ingredient definition 60.59, generic
Plant Oils
Flaxseed Oil
Flaxseed oil is a plant omega-3 source delivering alpha-linolenic acid (ALA). Per Bauer 2008 JAVMA, canine ALA-to-EPA conversion is under 5%, so flaxseed oil…
B-Vitamins
Folate
Folate (vitamin B9) is a water-soluble essential vitamin in one-carbon transfer reactions (DNA synthesis, methylation, methionine cycle) per Bailey 2010. AAF…
Fiber & Prebiotics
FOS
FOS (fructooligosaccharides) is a short-chain plant-derived prebiotic fiber fermented to short-chain fatty acids by Bifidobacterium and Lactobacillus. Per Su…
Controversial Ingredients
Garlic
Garlic (Allium sativum) is an Amaryllidaceae bulb containing thiosulfate organosulfur compounds (allicin, allyl propyl disulfide) toxic to dogs at high dose …
Controversial Ingredients
Ginger
Ginger (Zingiber officinale rhizome) contains gingerols and shogaols with 5-HT3 antagonist activity per Holtmann 2009 (Aliment Pharmacol Ther). Anti-emetic p…
Joint Support & Cartilage
Glucosamine
Glucosamine is a marketed joint-support nutraceutical, not a complete-and-balanced nutrient. AAHA 2022 rates it an adjunct with weak evidence; omega-3 is mor…
Joint Support & Cartilage
Glucosamine Forms
Glucosamine sulfate, glucosamine HCl, and N-acetyl-glucosamine differ in counter-ion and bioavailability. Per Adebowale 2002 oral absorption is comparable; p…
Amino Acids & Derivatives
Glycine
Glycine is the simplest amino acid (C2H5NO2), classically non-essential but conditionally essential in injury, sepsis, and rapid growth per Wang 2013 (Amino …
Joint Support & Cartilage
Green Lipped Mussel
Green-lipped mussel (Perna canaliculus, native to New Zealand) supplies glycosaminoglycans (chondroitin sulfate, glucosamine, hyaluronic acid) plus marine om…
Preservatives & Natural Antioxidants
Green Tea Extract
Green tea extract contains EGCG, a polyphenol antioxidant. Per Lambert 2010 (Chem Res Toxicol), high oral doses can cause hepatotoxicity. Pet food inclusion …
Phosphates, Gums & Misc Additives
Guar Gum
Guar gum is a galactomannan polysaccharide extracted from Cyamopsis tetragonoloba seed endosperm. 80-85% soluble fiber. 2:1 mannose:galactose ratio per Mudgi…
Plant Oils
Hempseed Oil
Hempseed oil is cold-pressed seed oil from Cannabis sativa L. (industrial hemp cultivar) containing ~15-20% ALA omega-3, ~50-60% LA omega-6, and ~3-5% gamma-…
Marine Oils
Herring Oil
Herring oil is extracted from Atlantic herring (Clupea harengus) and Pacific herring (Clupea pallasii) — small, lipid-rich pelagic forage fish. EPA + DHA com…
Animal Proteins & By-Products
Hydrolyzed Protein
Hydrolyzed protein has been enzymatically cleaved into peptides too small for IgE recognition. Per Olivry 2010 BMC and Cave 2006 J Nutr, target molecular wei…
Fiber & Prebiotics
Inulin
Inulin is a long-chain fructan (DP 11-60+) prebiotic fiber from chicory root. Per Sunvold 1995 J Anim Sci, canine colonic fermentation is slower and reaches …
Trace Minerals
Iodine
Iodine is an essential trace mineral required for thyroid hormone (T3/T4) synthesis per Roti 1991 (Endocr Rev). AAFCO 2024 canine adult minimum 1.0 mg per kg…
Trace Minerals
Iron Supplements
Iron is essential per NRC 2006 / AAFCO 2024 (80 mg/kg DM minimum adult). Per Hurrell 2010, heme iron (animal-source) achieves 15-35% bioavailability vs 2-20%…
Fiber & Prebiotics
Jerusalem Artichoke
Jerusalem artichoke (Helianthus tuberosus) is a sunflower-relative tuber containing 14-19% inulin by fresh weight per Kaur 2002 Crit Rev Food Sci Nutr. AAFCO…
Trace Minerals
Kelp
Kelp (large brown seaweed species, Phaeophyceae) is a mineral and iodine source in pet food. Iodine content highly variable: 300-7,000 mg/kg dry weight per F…
Marine Oils
Krill Oil
Krill oil delivers EPA and DHA bound to phospholipids rather than triglycerides, with naturally occurring astaxanthin. Per Burri 2012 Lipids, phospholipid om…
Amino Acids & Derivatives
L-Carnitine
L-carnitine is a fatty-acid transport cofactor used in canine weight-management and cardiac diets. Gross 1998 Royal Canin study: 50 ppm preserves lean mass d…
Probiotic Strains
Lactobacillus acidophilus
Lactobacillus acidophilus is a lactic-acid-producing probiotic with low-to-moderate canine GI evidence per AAHA 2022 and ACVIM 2022. Mechanism, AAFCO 2024 DF…
Probiotic Strains
Lactobacillus plantarum
Lactobacillus plantarum is a non-spore-forming gram-positive lactic-acid bacterium used as a direct-fed microbial in canine probiotics. Per Manninen 2006 (J …
Probiotic Strains
Lactobacillus rhamnosus
Lactobacillus rhamnosus is a gram-positive lactic acid bacterium — the LGG strain (rhamnosus GG, per Goldin 1992) is the most-studied human probiotic. Per AA…
Animal Proteins & By-Products
Lamb Meal
Lamb meal is dry rendered lamb (clean flesh + skin ± bone), 60-65% crude protein per AAFCO. Common base for novel-protein and limited-ingredient diets. Disti…
Animal Fats
Lard
Lard is rendered pork fat per AAFCO 2024 with approximately 40% saturated, 45% monounsaturated, 11% omega-6 linoleic, and 1% omega-3 ALA per USDA FoodData Ce…
Yeasts & Cellular Nutrients
Lecithin
Lecithin is a phospholipid mixture (primarily phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol) extracted from soybean (most common) or su…
Pulse Legumes
Lentils
Lentils (Lens culinaris) are Fabaceae pulse legumes supplying ~25% protein, soluble fiber, B vitamins, and iron per USDA FoodData Central. Implicated in FDA …
Carotenoids & Advanced Antioxidants
Lutein
Lutein is a xanthophyll carotenoid concentrated in the retinal macula per Krinsky 2003 — distinct from beta-carotene (which dogs can convert to vitamin A) be…
Macrominerals
Magnesium
Magnesium is an essential macromineral for dogs and cats — AAFCO 2024 canine adult minimum 0.06% dry matter, feline 0.04%. Cofactor for 300+ enzymes per Sari…
Trace Minerals
Manganese
Manganese is an essential trace mineral per NRC 2006 and AAFCO 2024 dog food nutrient profiles — required for bone development, cartilage formation, and enzy…
Specialty Fats
MCT Oil
MCT (medium-chain triglyceride) oil bypasses normal fat digestion and is metabolized to ketones, an alternative brain fuel. Per Pan 2010 Br J Nutr and Robert…
Animal Proteins & By-Products
Meat And Bone Meal
Meat and bone meal (MBM) is rendered mammalian tissue including bone, with minimum 4% phosphorus and Ca:P ratio not greater than 2.2:1 per AAFCO 2024. Per FD…
Phosphates, Gums & Misc Additives
Menadione
Menadione (vitamin K3 / MSBC) is a synthetic vitamin K source widely used in pet food. Per FDA regulation it is approved only for poultry feed; the AAFCO 202…
Botanical & Specialty Nutraceuticals
Milk Thistle
Milk thistle (Silybum marianum) and its silymarin/silybin fractions are a hepatic adjunct in canine medicine. Per Vandeweerd 2013 systematic review and Webb …
Grains & Carbohydrates
Millet
Millet is a gluten-free cereal grain group encompassing pearl millet (Pennisetum glaucum), foxtail millet (Setaria italica), and other Poaceae species per Sa…
Preservatives & Natural Antioxidants
Mixed Tocopherols
Mixed tocopherols are a natural vitamin E-derived antioxidant blend used to replace synthetic preservatives BHA, BHT, and ethoxyquin in premium dog food. Tra…
Fiber & Prebiotics
MOS
MOS (mannan-oligosaccharides) is a yeast cell wall extract derived from Saccharomyces cerevisiae. Per Stuyven 2009 Vet Immunol Immunopathol, MOS binds Type 1…
Joint Support & Cartilage
MSM
MSM is a sulfur-containing nutraceutical marketed for joint support. NIH classifies oral MSM as 'possibly effective' for human osteoarthritis; canine evidenc…
B-Vitamins
Niacin
Niacin (vitamin B3) is an essential B-vitamin per NRC 2006 and AAFCO 2024 — required for NAD/NADP coenzyme synthesis. Per Carvalho 1971, dogs (unlike cats) c…
Yeasts & Cellular Nutrients
Nutritional Yeast
Nutritional yeast is deactivated Saccharomyces cerevisiae cultivated as a primary food ingredient. Per AAFCO 2024, it differs from brewers yeast (a brewing b…
Grains & Carbohydrates
Oats
Oats (Avena sativa, whole grain or oat groats) are a complex-carbohydrate source providing 60% starch, 11% protein, 7% fat, and 10% fiber per USDA FoodData C…
Marine Oils
Omega-3 Fatty Acids
Omega-3 fatty acids EPA and DHA from marine sources outperform ALA from flaxseed for canine inflammatory and cardiac applications. AAHA 2022 rates marine ome…
B-Vitamins
Pantothenic Acid
Pantothenic acid (vitamin B5) is a water-soluble essential vitamin and the precursor to coenzyme A and the acyl carrier protein per Smith 1987. AAFCO 2024 do…
Whole Vegetables
Parsley
Parsley (Petroselinum crispum) is an Apiaceae herb supplying vitamin K1, vitamin C, and chlorophyll per USDA FoodData Central. Curly-leaf and Italian flat-le…
Plant Proteins
Pea Protein
Pea protein is a kibble-tier marker linked to the FDA-CVM 2018-2022 grain-free DCM investigation. 1,382 reports through Nov 2022. Pulse-heavy diets remain un…
Pulse Legumes
Peas
Peas (Pisum sativum) are Fabaceae pulse legumes supplying ~22% protein, fiber, B vitamins, and minerals per USDA FoodData Central. Distinct from pea-protein …
Probiotic Strains
Pediococcus acidilactici
Pediococcus acidilactici is a gram-positive, homofermentative lactic-acid bacterium used as a direct-fed microbial in canine probiotics. Per Strompfova 2010 …
Plant Oils
Perilla Oil
Perilla oil is a plant omega-3 ingredient from the East Asian herb Perilla frutescens, delivering alpha-linolenic acid (ALA, 18:3n-3) at 55-60% by weight per…
Controversial Ingredients
Pomegranate
Pomegranate (Punica granatum) is a Lythraceae fruit supplying ellagitannins (punicalagin, punicalin) per Aviram 2008 (Am J Clin Nutr). Gut microbiome-derived…
Macrominerals
Potassium Chloride
Potassium chloride (KCl) supplies 52% elemental potassium and 48% chloride. AAFCO 2024 canine maintenance K minimum 0.6% on dry-matter basis. Hypokalemia ris…
Plant Proteins
Potato Protein
Potato protein is a 75-85% crude protein concentrate extracted from Solanum tuberosum tuber waste streams via alkaline precipitation per Pots 1999 (J Sci Foo…
Animal Fats
Poultry Fat
Poultry fat is a species-anonymous rendered fat per AAFCO Official Publication 2024. Lipid profile is 30% saturated, 47% monounsaturated, 21% omega-6 linolei…
Fiber & Prebiotics
Prebiotics
Prebiotics are non-digestible plant carbohydrates that selectively feed beneficial gut bacteria. FOS (fructooligosaccharides), MOS (mannan-oligosaccharides),…
Phosphates, Gums & Misc Additives
Propylene Glycol
Propylene glycol is a humectant approved by FDA 21 CFR 582.1666 as GRAS for dogs but banned in cat food since 1996 due to Heinz body anemia per Christopher 1…
Grains & Carbohydrates
Pumpkin
Pumpkin (Cucurbita species, plain canned or pureed) is a low-calorie soluble + insoluble fiber source widely used in pet food and home supplementation. Provi…
B-Vitamins
Pyridoxine
Pyridoxine (vitamin B6) is a water-soluble essential vitamin and the dietary precursor to pyridoxal 5-phosphate (PLP), the coenzyme for over 100 enzymes in a…
Grains & Carbohydrates
Quinoa
Quinoa (Chenopodium quinoa) is a pseudo-cereal seed used as a gluten-free carbohydrate source in pet food. Provides 64% starch, 14% protein with complete ess…
B-Vitamins
Riboflavin
Riboflavin (vitamin B2) is a water-soluble essential vitamin that forms the coenzymes FAD and FMN per Powers 2003. AAFCO 2024 dog food minimum is 5.2 mg/kg D…
Preservatives & Natural Antioxidants
Rosemary Extract
Rosemary extract is a natural antioxidant containing carnosic acid and rosmarinic acid. Per FDA 21 CFR 182 GRAS and AAFCO 2024, it is approved at typical pet…
Probiotic Strains
Saccharomyces boulardii
Saccharomyces boulardii is a non-pathogenic yeast probiotic — the only commercial canine probiotic that is not a bacterium. Per Aktas 2007 (Acta Vet Brno) ca…
Animal Proteins & By-Products
Salmon Meal
Salmon meal is dry rendered salmon (whole fish + heads + frames), 60-65% crude protein per AAFCO. Distinct from generic 'fish meal' (species-variable) and fr…
Marine Oils
Salmon Oil
Salmon oil delivers EPA and DHA, the long-chain omega-3 fatty acids most efficacious for canine osteoarthritis per AAHA 2022. Per Bauer 2011 JAVMA and Roush …
Botanical & Specialty Nutraceuticals
SAMe
SAMe (S-adenosyl-L-methionine) is a methyl donor and glutathione precursor used as a hepatic and cognitive adjunct in dogs. Per Center 2005 JAVMA, oral SAMe …
Marine Oils
Sardine Oil
Sardine oil delivers approximately 18% EPA + 12% DHA per Bauer 2011 JAVMA reference data, comparable to salmon oil. Per AAHA 2022 Pain Management Guidelines,…
Trace Minerals
Selenium
Selenium is an essential trace mineral per NRC 2006 and AAFCO 2024 dog food nutrient profiles — required as a cofactor for glutathione peroxidase (GPx) antio…
Phosphates, Gums & Misc Additives
Sodium Hexametaphosphate (SHMP)
Sodium hexametaphosphate (SHMP) is a calcium-chelating polyphosphate used as a dental anti-tartar coating on kibble surface. Per Stookey 2009 Am J Vet Res an…
Phosphates, Gums & Misc Additives
Sodium Tripolyphosphate (STPP)
Sodium tripolyphosphate (STPP) is a calcium-binding additive that reduces dental tartar formation. Per Hennet 2007 and Stookey 2009, STPP-containing diets an…
Grains & Carbohydrates
Sorghum
Sorghum (Sorghum bicolor) is a mid-glycemic gluten-free cereal grain. 75% starch, 11% protein, 2% fat per USDA FoodData Central. GI ~62 per Atkinson 2008. Dr…
Controversial Ingredients
Soy
Soy in dog food is a complete plant protein. Soybean meal runs 44-48% crude protein per AAFCO. Mueller 2016 places soy at 6% of confirmed canine allergies. P…
Plant Proteins
Soy Protein Isolate
Soy protein isolate is ≥90% protein on a dry-matter basis per AAFCO 2024 with 96-99% canine ileal digestibility per Hill 1996. Per Mueller 2016, soy is the 5…
Whole Vegetables
Spinach
Spinach (Spinacia oleracea) is a leafy green Amaranthaceae vegetable supplying vitamin K, iron, magnesium, folate, and lutein per USDA FoodData Central. Oxal…
Plant Oils
Sunflower Oil
Sunflower oil is high-linoleic seed oil at 65-70% omega-6 in standard cultivars per USDA FoodData Central. Per Bauer 2011 JAVMA, linoleic acid supports skin …
Grains & Carbohydrates
Sweet Potato
Sweet potato (Ipomoea batatas) is a starchy tuber used as a carbohydrate source in grain-free and limited-ingredient pet food formulations. Provides 20% comp…
Grains & Carbohydrates
Tapioca
Tapioca is extracted starch from Manihot esculenta (cassava) root, 88% starch on dry-matter basis. GI ~70 per Atkinson 2008. Cyanogenic glycoside processing …
Amino Acids & Derivatives
Taurine
Taurine is essential for cats and conditionally essential for some dogs. Per AAFCO Cat Food Nutrient Profiles, dry food must supply 0.1% taurine; canned, 0.2…
B-Vitamins
Thiamine
Thiamine (vitamin B1) is a heat-labile essential cofactor for carbohydrate metabolism. AAFCO 2024 dog food nutrient profile minimum is 2.25 mg/kg DM. Deficie…
Controversial Ingredients
Tomato Pomace
Tomato pomace (Solanum lycopersicum) is the residual skins, seeds, and pulp from tomato juice and paste production per AAFCO 2024. Supplies lycopene (5-50 mg…
Animal Fats
Turkey Fat
Turkey fat is rendered fat from turkey tissue per AAFCO 2024, with approximately 30% saturated, 42% monounsaturated, 22% omega-6 linoleic, and 1.5% omega-3 A…
Controversial Ingredients
Turmeric
Turmeric contains curcumin, an anti-inflammatory polyphenol with weak oral bioavailability. Per Innes 2017 and Comblain 2017, evidence for curcumin in canine…
Fat-Soluble Vitamins
Vitamin A
Vitamin A is an essential fat-soluble vitamin in dogs and cats supplied as pre-formed retinol (animal sources), retinyl esters (animal sources), or carotenoi…
Fat-Soluble Vitamins
Vitamin D
Vitamin D (calciferol) is an essential fat-soluble vitamin in dogs and cats; both species cannot synthesize adequate cholecalciferol from cutaneous UVB expos…
Fat-Soluble Vitamins
Vitamin E Forms
Vitamin E is a family of 8 fat-soluble compounds — 4 tocopherols (α/β/γ/δ) and 4 tocotrienols. Per NRC 2006 / AAFCO 2024, alpha-tocopherol is the nutritional…
Fat-Soluble Vitamins
Vitamin K (Menaquinones)
Vitamin K is a family — K1 phylloquinone (plant), K2 menaquinones MK-4 to MK-13 (animal/microbial), K3 menadione (synthetic). Per AAFCO 2024 menadione expert…
Controversial Ingredients
Wheat
Wheat in dog food is digestible at 90%+ per AAFCO. Mueller 2016 places wheat at 13% of confirmed canine allergies. Gluten-sensitive enteropathy is a document…
Controversial Ingredients
Wheat Gluten
Wheat gluten is an 80% protein concentrate from wet-milled wheat per AAFCO 2024. Per Hall 1992 Vet Rec gluten enteropathy is documented in Irish Setters as a…
Grains & Carbohydrates
White Potato
White potato (Solanum tuberosum) is a high-glycemic-index starchy tuber. GI 85+ per Atkinson 2008 (Diabetes Care). 80% starch, 2% protein, trace fat on dry-m…
Phosphates, Gums & Misc Additives
Xanthan Gum
Xanthan gum is a heteropolysaccharide produced by Xanthomonas campestris bacterial fermentation per Garcia-Ochoa 2000 (Biotechnol Adv). 100% soluble fiber, p…
Controversial Ingredients
Yucca Schidigera
Yucca schidigera is a Mojave-desert plant extract added to dog food primarily for stool odor reduction. Active compounds are steroidal saponins binding ammon…
Carotenoids & Advanced Antioxidants
Zeaxanthin
Zeaxanthin is a xanthophyll carotenoid and the stereoisomer of lutein — together they form the retinal macular pigment per Krinsky 2003 (Annu Rev Nutr). Zeax…
Trace Minerals
Zinc Supplements
Zinc is essential per NRC 2006 / AAFCO 2024 (80 mg/kg DM minimum adult). Form matters: zinc proteinate, methionine, or chelate (organic) is 1.5–2× more bioav…

The 30 most-referenced ingredients across our 192 brand reviews — these are the ingredients that drive scoring decisions for most kibble formulas.

#1 · 120 brand reviews cite this
Corn
Corn in dog food is not a filler. AAFCO data places ground corn at 86-89% digestibility. Mueller 2016 places true corn allergy below 0.4% of confirmed canine…
#2 · 95 brand reviews cite this
Chicken Meal
Chicken meal is rendered chicken (clean flesh, skin, with or without bone) at 63-65% crude protein. Per AAFCO Official Publication, distinct from chicken by-…
#3 · 76 brand reviews cite this
BHA & BHT
BHA and BHT are synthetic antioxidant preservatives classified IARC Group 2B (possibly carcinogenic). FDA permits them in pet food; the US NTP 15th Report on…
#4 · 75 brand reviews cite this
AAFCO Statement
The AAFCO statement on a pet food label tells you (a) whether it is complete and balanced, (b) which life stage, and (c) how that was substantiated — formula…
#5 · 67 brand reviews cite this
DHA
DHA (docosahexaenoic acid, 22:6n-3) is a 22-carbon long-chain omega-3 fatty acid concentrated in neural and retinal cell membrane phospholipid per Heinemann …
#6 · 66 brand reviews cite this
Wheat
Wheat in dog food is digestible at 90%+ per AAFCO. Mueller 2016 places wheat at 13% of confirmed canine allergies. Gluten-sensitive enteropathy is a document…
#7 · 64 brand reviews cite this
Taurine
Taurine is essential for cats and conditionally essential for some dogs. Per AAFCO Cat Food Nutrient Profiles, dry food must supply 0.1% taurine; canned, 0.2…
#8 · 58 brand reviews cite this
Omega-3 Fatty Acids
Omega-3 fatty acids EPA and DHA from marine sources outperform ALA from flaxseed for canine inflammatory and cardiac applications. AAHA 2022 rates marine ome…
#9 · 52 brand reviews cite this
Brown Rice
Brown rice (Oryza sativa with bran and germ intact) is a moderate-glycemic complex-carbohydrate source in pet food. Provides 75% starch, 3% fiber, B vitamins…
#10 · 51 brand reviews cite this
Peas
Peas (Pisum sativum) are Fabaceae pulse legumes supplying ~22% protein, fiber, B vitamins, and minerals per USDA FoodData Central. Distinct from pea-protein …
#11 · 49 brand reviews cite this
Chicken By Product Meal
AAFCO defines chicken meal, chicken by-product meal, poultry by-product meal, and animal by-product meal as distinct ingredients. Named species are traceable…
#12 · 46 brand reviews cite this
Chicken Fat
Chicken fat is a high-bioavailability energy source rich in linoleic acid (18-22% by weight). Per AAFCO Official Publication 2024 and NRC 2006 essential fatt…
#13 · 44 brand reviews cite this
Flaxseed Oil
Flaxseed oil is a plant omega-3 source delivering alpha-linolenic acid (ALA). Per Bauer 2008 JAVMA, canine ALA-to-EPA conversion is under 5%, so flaxseed oil…
#14 · 41 brand reviews cite this
Mixed Tocopherols
Mixed tocopherols are a natural vitamin E-derived antioxidant blend used to replace synthetic preservatives BHA, BHT, and ethoxyquin in premium dog food. Tra…
#15 · 39 brand reviews cite this
Barley
Barley (Hordeum vulgare, pearled or whole-grain) is the lowest-glycemic-index commercial grain in pet food. GI ~25-30 per Atkinson 2008. Contains 3-7% beta-g…
#16 · 38 brand reviews cite this
Corn Gluten Meal
Corn gluten meal is a 60% protein concentrate from wet-milled corn per AAFCO 2024. Per Hill 1996 J Nutr canine digestibility is 88-92%. It contributes amino …
#17 · 37 brand reviews cite this
Brewers Rice
Brewers rice is the small milled fragments separated during whole-rice processing. Recognized as a dog food ingredient by AAFCO since 1960. Nutritionally nea…
#18 · 35 brand reviews cite this
Blueberries
Blueberries (Vaccinium spp.) are Ericaceae fruits supplying anthocyanins, vitamin C, vitamin K1, and manganese per USDA FoodData Central. Anthocyanin antioxi…
#19 · 34 brand reviews cite this
EPA
EPA (eicosapentaenoic acid, 20:5n-3) is a long-chain omega-3 fatty acid synthesized in marine algae and concentrated up the food chain into fish oils per Bau…
#20 · 30 brand reviews cite this
Chickpeas
Chickpeas (Cicer arietinum, garbanzo beans) are Fabaceae pulse legumes supplying ~19% protein, soluble fiber, B vitamins, and minerals per USDA FoodData Cent…
#21 · 28 brand reviews cite this
Fish Meal
Fish meal is a dry, concentrated protein-mineral powder produced by rendering whole fish or fish trimmings. Per AAFCO 2024 ingredient definition 60.59, generic
#22 · 28 brand reviews cite this
Oats
Oats (Avena sativa, whole grain or oat groats) are a complex-carbohydrate source providing 60% starch, 11% protein, 7% fat, and 10% fiber per USDA FoodData C…
#23 · 27 brand reviews cite this
Calcium
Calcium is an essential macromineral in dogs and cats supplied as calcium carbonate, dicalcium phosphate, calcium phosphate, calcium lactate, or bone-source …
#24 · 27 brand reviews cite this
Carrots
Carrots (Daucus carota) are an Apiaceae root vegetable supplying beta-carotene, fiber, biotin, and vitamin K1 per USDA FoodData Central. Beta-carotene-to-ret…
#25 · 27 brand reviews cite this
Salmon Oil
Salmon oil delivers EPA and DHA, the long-chain omega-3 fatty acids most efficacious for canine osteoarthritis per AAHA 2022. Per Bauer 2011 JAVMA and Roush …
#26 · 25 brand reviews cite this
Egg Product
Egg product is dried whole egg (yolk + white) with PDCAAS biological value approaching 1.00, the gold-standard reference per FAO 2013. ~48% protein dry matte…
#27 · 24 brand reviews cite this
Lentils
Lentils (Lens culinaris) are Fabaceae pulse legumes supplying ~25% protein, soluble fiber, B vitamins, and iron per USDA FoodData Central. Implicated in FDA …
#28 · 23 brand reviews cite this
Cellulose
Cellulose in dog food is purified plant fiber. AAFCO has recognized powdered cellulose as a feed ingredient since 1940. Hill's R/D and Metabolic formulas use…
#29 · 23 brand reviews cite this
L-Carnitine
L-carnitine is a fatty-acid transport cofactor used in canine weight-management and cardiac diets. Gross 1998 Royal Canin study: 50 ppm preserves lean mass d…
#30 · 23 brand reviews cite this
Wheat Gluten
Wheat gluten is an 80% protein concentrate from wet-milled wheat per AAFCO 2024. Per Hall 1992 Vet Rec gluten enteropathy is documented in Irish Setters as a…