The scores
Wellness CORE Cat: A (90/100)
Blue Buffalo Indoor Cat: B (76/100)
A 14-point gap — and CORE clears the A-grade threshold. Wellness CORE sits near the top of our cat food rankings, alongside Acana Cat and Instinct Kitten at A/90, trailing only Orijen (A/91). Blue Buffalo is a solid mid-B that competes well on value. This isn’t a close call — 14 points reflects real formulation differences.
Read our full reviews of Wellness CORE Cat and Blue Buffalo Cat for the complete ingredient breakdowns.
How the ingredients compare
Here are the first five ingredients side by side:
Wellness CORE: Deboned Turkey, Turkey Meal, Chicken Meal, Peas, Potatoes
Blue Buffalo: Deboned Chicken, Chicken Meal, Brown Rice, Barley, Oatmeal
The protein story is where these two diverge sharply. Wellness CORE packs three named animal proteins before any carbohydrate — deboned turkey, turkey meal, and chicken meal. That’s an unusually dense protein front-load for a dry cat food. Blue Buffalo leads with deboned chicken and chicken meal, then shifts to grains for its remaining top-five slots. Both put animal protein first, but Wellness CORE commits to it more aggressively. The trade-off: Wellness CORE uses peas and potatoes as its carb base (grain-free), while Blue Buffalo relies on wholesome brown rice, barley, and oatmeal.
Where Wellness CORE pulls ahead
Triple protein density. Three named animal proteins in the first three ingredients is rare in commercial cat food. Turkey and chicken together provide a broader amino acid profile than chicken alone, and the double-rendered meals (turkey meal, chicken meal) deliver concentrated protein with moisture removed. For obligate carnivores, this protein-first approach is exactly what the biology demands.
Salmon oil for EPA & DHA. This is a critical differentiator for cats. Cats cannot efficiently convert plant-based ALA (from flaxseed) into the EPA and DHA they actually need. Wellness CORE’s dedicated salmon oil delivers marine-sourced omega-3s in the forms cats can use directly — supporting skin, coat, brain function, and inflammation management. Blue Buffalo includes flaxseed but no marine omega-3 source, which is a meaningful gap for a species that depends on preformed EPA/DHA.
Probiotics and chicory root. Wellness CORE includes live probiotic cultures alongside chicory root as a prebiotic fiber source. This combination actively supports gut health and beneficial bacteria. Blue Buffalo offers no probiotics and relies on pea fiber for its digestive fiber, which is functional but doesn’t promote the same gut microbiome benefits.
Cranberries for urinary health. A small but thoughtful addition. Cranberries contain proanthocyanidins that help prevent bacteria from adhering to the urinary tract — a relevant benefit for cats, which are prone to urinary issues. Blue Buffalo doesn’t include any targeted urinary health ingredients. Shop on Amazon →
Where Blue Buffalo holds its own
Grain-inclusive formula. Blue Buffalo’s brown rice, barley, and oatmeal base avoids the grain-free/DCM concern entirely. While the FDA’s investigation into grain-free diets and dilated cardiomyopathy focused primarily on dogs, the principle of using whole grains over legume-heavy carb bases is sound nutrition for any species. Wellness CORE’s peas and potatoes aren’t inherently dangerous, but Blue Buffalo’s grain-inclusive approach gives cautious owners peace of mind.
Lower cost. Blue Buffalo is widely available at grocery stores, pet retailers, and online — and it frequently goes on sale. Wellness CORE commands a premium price that reflects its denser protein content and supplement profile. For budget-conscious cat owners, Blue Buffalo delivers solid B-grade nutrition at a more accessible price point.
Single protein simplicity. Blue Buffalo’s chicken-only protein approach can actually be an advantage for cats with known sensitivities. If your cat tolerates chicken well, a single-protein-species formula makes it easier to identify any future dietary reactions. However, this comes at the cost of pea protein and pea starch appearing in the ingredient list — plant-based protein fillers that inflate the total protein percentage without the complete amino acid profile of animal sources. Shop on Amazon →
The bottom line
The 14-point gap tells the story. Wellness CORE Cat earns its lead with a genuinely superior formulation: triple animal protein, marine-sourced omega-3s via salmon oil, probiotics for gut health, and cranberries for urinary support. These aren’t marketing flourishes — they’re ingredients that address real nutritional needs for cats. Blue Buffalo’s advantages are practical rather than nutritional: grain-inclusive peace of mind, wider availability, and a friendlier price tag. If budget is the deciding factor, Blue Buffalo is a perfectly respectable choice at B/76. But if you’re choosing purely on ingredient quality, Wellness CORE Cat is the clear upgrade.