Is JustFoodForDogs or Sundays better for dogs?

Both tie at A/90 on the v15 rubric — effectively tied scores reflecting two structurally different DTC formats: fresh-frozen cooked (JustFoodForDogs) vs shelf-stable air-dried (Sundays). JustFoodForDogs Beef & Russet Potato uses AAFCO feeding-trial substantiation, operates in-store Petco retail at ~80 locations, and includes a Veterinary Support Diet Rx therapeutic line. Sundays Air-Dried Beef Recipe stacks four named beef parts in top-four positions (beef + beef heart + beef liver + beef bone), uses zero synthetic supplements (every nutrient sourced from whole-food ingredients), and ships shelf-stable without freezer requirement. Pick JustFoodForDogs for fresh-cooked format + feeding-trial substantiation + retail + Rx line. Pick Sundays for raw-prey-model nutrient density + zero-synthetic formulation + shelf-stable convenience.

What does “zero synthetic supplements” mean for Sundays, and why does it matter?

Zero synthetic supplements means every nutrient in the formulation comes from whole-food ingredients rather than isolated synthetic compounds. In Sundays, calcium and phosphorus come from beef bone (not dicalcium phosphate or calcium carbonate). Vitamin A comes from beef liver and carrots (not retinyl palmitate). Vitamin E comes from mixed tocopherols (natural form, not synthetic alpha-tocopherol acetate). Selenium comes from selenium yeast (a fermented yeast form that’s more bioavailable than synthetic sodium selenite). Iron, zinc, and copper come from organ meats and dried kelp (not ferrous sulfate, zinc oxide, or copper sulfate). The structural argument for whole-food nutrient sourcing: (1) bioavailability is generally higher than synthetic equivalents for many nutrients (selenium yeast vs sodium selenite is the clearest example); (2) whole-food sources deliver co-factors and matrix nutrients that synthetic isolates lack; (3) reduces synthetic-ingredient exposure for owners concerned about cumulative synthetic-chemical load over a dog’s lifespan. The counter-argument: synthetic supplementation has decades of safety evidence and ensures consistent nutritional adequacy when whole-food sourcing is variable. Both approaches deliver nutritionally complete formulations; the choice is about formulation philosophy.

Should I feed fresh-frozen JustFoodForDogs or air-dried Sundays?

The decision depends primarily on format fit to your household and feeding context rather than which is “better.” (1) For households with adequate freezer space, ability to thaw and refrigerate in advance, and no frequent travel disruption: fresh-frozen JustFoodForDogs offers cooked-meat palatability + AAFCO feeding-trial substantiation. (2) For households with limited freezer space, frequent travel, dogs boarded at facilities, or emergency-supply concerns (power outage, freezer failure): air-dried Sundays is structurally aligned. (3) For picky eaters or dogs transitioning from kibble who respond better to warmer / moister texture: JustFoodForDogs cooked-fresh palatability profile typically gets higher acceptance. (4) For dogs that respond well to jerky-style textures or owners wanting raw-style nutrient density without raw safety concerns: Sundays air-dried four-named-beef formulation. (5) For owners with dogs needing prescription therapeutic dietary management: JustFoodForDogs Veterinary Support Diet Rx line. Many owners use both — JustFoodForDogs at home + Sundays for travel / boarding / emergency-supply scenarios.

JustFoodForDogs vs Sundays: Fresh-Frozen or Air-Dried in 2026?

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The short answer: JustFoodForDogs and Sundays tie at A/90 on the v15 rubric — effectively tied scores reflecting two structurally different DTC nutrition formats: fresh-frozen cooked vs shelf-stable air-dried whole-food. JustFoodForDogs Beef & Russet Potato Fresh Frozen leads with ground beef + russet potatoes + sweet potatoes + green beans + carrots + sunflower oil + beef liver + green peas + apples + omega marine microalgae oil. The signal differentiators are AAFCO feeding-trial substantiation, in-store Petco retail presence at ~80 locations, and the Veterinary Support Diet Rx therapeutic line. Sundays Air-Dried Beef Recipe leads with beef + beef heart + beef liver + beef bone + quinoa + pumpkin + fish oil + sunflower oil + zucchini + kale + flaxseed + salt + parsley + dried kelp + dried chicory root + turmeric + mixed tocopherols + ginger + selenium yeast, followed by a long whole-food tail (blueberries + carrots + apples + tomatoes + shiitake mushrooms + broccoli + oranges + cranberries + spinach + beets + cherries + strawberries). The signal differentiators are four named beef parts in the top-four positions (beef + beef heart + beef liver + beef bone — raw-prey-model nutrient density without raw safety concerns), zero synthetic supplements (every nutrient sourced from whole-food ingredients), and shelf-stable air-dried format that doesn’t require freezer storage. Pick JustFoodForDogs for fresh-cooked format + AAFCO feeding-trial substantiation + retail accessibility + Rx line. Pick Sundays for air-dried shelf-stable format + four-named-beef whole-food nutrient density + zero-synthetic-supplement formulation philosophy.

The scores

JustFoodForDogs Beef & Russet Potato Fresh Frozen: A (90/100) — Ground Beef, Russet Potatoes, Sweet Potatoes, Green Beans, Carrots.

Sundays Air-Dried Beef Recipe: A (90/100) — Beef, Beef Heart, Beef Liver, Beef Bone, Quinoa.

How the ingredients compare

The top-five ingredients reveal the formulation split between these two products:

JustFoodForDogs: Ground Beef, Russet Potatoes, Sweet Potatoes, Green Beans, Carrots

Sundays: Beef, Beef Heart, Beef Liver, Beef Bone, Quinoa

Both products earn effectively the same v15 score, but the ingredient lineups tell different stories about how they got there — that is where the actual pick decision lives.

Where JustFoodForDogs pulls ahead

AAFCO feeding-trial substantiation — actual dogs fed under controlled protocols, not just formulation-calculated: JustFoodForDogs explicitly states feeding-trial substantiation on the label — actual dogs fed the recipe under AAFCO-controlled protocols (typically 26 weeks adult maintenance) with monitoring of body weight, body condition, blood chemistry, and other health markers. Sundays uses formulation-only AAFCO substantiation. Under v15, feeding-trial substantiation earns +5 rubric points over formulation-only as a measure of real-world nutritional validation. JustFoodForDogs is one of very few DTC fresh brands pursuing feeding-trial substantiation; Sundays follows the more standard formulation-only path. For owners specifically valuing the most rigorous AAFCO substantiation method available, JustFoodForDogs is structurally aligned. Shop on Amazon →

In-store Petco retail + Veterinary Support Diet Rx line — commerce + therapeutic structural advantages no other DTC brand offers: JustFoodForDogs operates ~80 in-store Petco kitchens nationally + a Veterinary Support Diet prescription therapeutic line (Kidney Support, Hepatic Support, Joint & Skin Support, Balanced Remedy, Critical Care). Sundays is subscription + select-retailer-only with no in-store fresh-prepared kitchens and no Rx therapeutic line. For owners wanting walk-in retail accessibility, prescription therapeutic dietary options, supplemental travel-pack purchasing without subscription, or hybrid trial + subscription commerce flexibility, JustFoodForDogs is structurally aligned.

Fresh-frozen format with cooked-meat nutrient bioavailability and tighter palatability for picky eaters: JustFoodForDogs Beef & Russet Potato is cooked fresh-frozen — gently cooked at lower temperatures than kibble extrusion, then frozen for shipping. Cooked meat has different palatability than air-dried (warmer, moister texture is more like human-cooked meals dogs respond to) and may have higher acceptance for picky eaters or dogs transitioning from kibble to fresh. The cooking process also denatures certain proteins making them slightly more digestible for dogs with mild GI sensitivities. Sundays is air-dried (low-temperature dehydration over extended duration) — the format preserves nutrient density and shelf-stability but produces a drier texture closer to jerky than fresh-cooked stew. For owners with picky eaters, dogs transitioning from kibble who respond better to cooked-meat texture, or owners specifically wanting fresh-cooked palatability profile, JustFoodForDogs is structurally aligned.

Where Sundays holds its own

Four named beef parts in the top-four panel positions — raw-prey-model nutrient density without raw safety concerns: Sundays Air-Dried Beef Recipe leads with beef (muscle meat) at position one, beef heart at position two (organ meat rich in CoQ10, taurine, and B-vitamins), beef liver at position three (organ meat rich in vitamin A, B12, copper, and iron), and beef bone at position four (natural calcium and phosphorus). Four named beef proteins before any non-animal ingredient appears — a structural feature unmatched in the DTC fresh-cooked category. JustFoodForDogs Beef & Russet Potato leads with ground beef + russet potatoes + sweet potatoes + green beans + carrots; beef liver appears at position seven (one organ-meat position vs Sundays’ two named organs plus bone). For owners specifically valuing raw-prey-model-style nutrient density, maximum organ-meat inclusion, or natural bone-source calcium / phosphorus, Sundays is structurally aligned. Shop on Amazon →

Zero synthetic supplements — every nutrient sourced from whole-food ingredients: Sundays uses no synthetic vitamin or mineral supplements anywhere in the formulation. Calcium and phosphorus come from beef bone. Vitamin A comes from beef liver and carrots. Vitamin E comes from mixed tocopherols (natural form) and sunflower oil. Selenium comes from selenium yeast (more bioavailable than synthetic sodium selenite used in most pet foods). Iron comes from organ meats. Zinc comes from beef and dried kelp. Iodine comes from dried kelp. There is no “zinc oxide” or “copper sulfate” or “sodium selenite” or “vitamin D3 supplement” on the Sundays label. JustFoodForDogs uses the JFFD Nutrient Blend (a complete vitamin and chelated-mineral premix including dicalcium phosphate, calcium carbonate, multiple amino acid chelates, vitamin E supplement, cholecalciferol, riboflavin, thiamine hydrochloride, potassium iodide). Both approaches deliver nutritionally complete formulations; the structural difference matters to owners specifically valuing whole-food nutrient sourcing over synthetic supplementation. For zero-synthetic formulation philosophy, Sundays is the only A/90-tier DTC option in the catalog.

Shelf-stable air-dried format — no freezer storage needed, travels well, works for boarding and emergency contexts: Sundays Air-Dried ships and stores at room temperature with a 12-month shelf life. The format eliminates the freezer-storage capacity constraint that fresh-frozen subscriptions like JustFoodForDogs require, travels easily for road trips and vacations, and serves as emergency-supply food for power-outage / freezer-failure scenarios where fresh-frozen feeding becomes impossible. For households with limited freezer space, frequent travel where fresh-frozen feeding is difficult, dogs boarded at facilities that prefer shelf-stable food, or owners wanting fresh-quality nutrition without freezer-storage logistics, Sundays’ air-dried format is structurally aligned. JustFoodForDogs is fresh-frozen and requires freezer storage plus refrigerated thawing.

The bottom line

JustFoodForDogs and Sundays tie at A/90 — effectively tied rubric scores reflecting two structurally different DTC formats. Pick JustFoodForDogs Beef & Russet Potato Fresh Frozen when AAFCO feeding-trial substantiation matters, in-store Petco retail accessibility is useful, Veterinary Support Diet Rx line is needed, or fresh-cooked palatability profile fits your dog (picky eaters, transitioning from kibble). Pick Sundays Air-Dried Beef Recipe when four named beef parts in top-four positions (beef + beef heart + beef liver + beef bone) is the priority, zero-synthetic-supplement formulation philosophy matters, or air-dried shelf-stable format fits your storage and lifestyle constraints (limited freezer, travel, boarding, emergency-supply). Both deliver legitimate A-tier whole-food DTC nutrition at their format.