The scores
Acana Highest Protein Indoor Cat Recipe: A (90/100) — Excellent. Three fresh proteins (chicken, trout, salmon) followed by three meals (chicken meal, pollock meal, herring meal), then organ meats and freeze-dried cod, all before the major carbohydrate load. Champion Petfoods’ WholePrey philosophy applied to feline obligate-carnivore nutrition.
Wellness CORE Grain-Free Original Deboned Turkey, Turkey Meal & Chicken Meal Cat Food: A (90/100) — Excellent. Deboned turkey first, then deboned chicken, two meals, herring meal for marine protein, salmon oil for omega-3s, and a three-strain probiotic blend (Enterococcus faecium, Bacillus licheniformis, Bacillus subtilis).
How the ingredients compare
The top five ingredients:
Acana Cat: Chicken, Trout, Salmon, Chicken Meal, Pollock Meal
Wellness CORE Cat: Deboned Turkey, Deboned Chicken, Turkey Meal, Chicken Meal, Peas
The two A-tier scores come from genuinely different architectures. Acana opens with three named fresh proteins from three different species — chicken plus trout plus salmon — followed immediately by chicken meal and pollock meal at four and five. Five of the first five ingredients are animal-sourced, with two species of fish in the top five. By position six (herring meal), Acana has stacked six named animal proteins before its first carbohydrate (whole red lentils at seven) appears.
Wellness CORE opens with two named fresh poultry sources (deboned turkey + deboned chicken) and reinforces with two meals (turkey meal + chicken meal) before the first carbohydrate (peas) at position five. Four of the first four ingredients are animal-sourced. The architectural difference is fish: Acana brings fish protein in by position two (trout), while Wellness CORE introduces marine protein at position six (herring meal). For cats — obligate carnivores who benefit from diverse animal-protein sources and naturally-occurring marine taurine — Acana’s earlier-position fish is a meaningful nutritional architectural choice.
Where Wellness CORE pulls ahead is gut support. The formula carries three live-strain probiotics that Acana’s formula lacks. Acana counters with organ meats deeper in the list (chicken liver, chicken heart, freeze-dried cod) plus a multi-strain probiotic blend in its deeper formula architecture (Lactobacillus acidophilus, Bifidobacterium animalis, Lactobacillus casei appear in the deeper section). Both formulas hit on probiotic support — Wellness CORE just leads with it more prominently.
Where Wellness CORE pulls ahead
Three named fresh-or-meal-form proteins in top four. Wellness CORE’s top-four animal-protein density is exceptional — deboned turkey, deboned chicken, turkey meal, chicken meal — before any plant ingredient appears. For cats with poultry-first preferences or owners who specifically want a turkey-led formula, Wellness CORE delivers a poultry-dominant architecture without diluting it.
Probiotic-blend prominence. Three live-strain probiotics in the formula support gut barrier function, modulate inflammatory response, and improve stool quality — particularly meaningful for indoor cats prone to digestive issues, IBD, or hairball-related vomiting. Wellness CORE’s probiotic positioning is more prominent than Acana’s.
Lower legume load. Wellness CORE uses peas as its primary carbohydrate without stacking lentils, chickpeas, and pinto beans. Acana’s legume profile is heavier (whole red lentils, whole pinto beans, whole green lentils, whole chickpeas, plus pea starch and pea fiber) — the FDA DCM advisory targets dogs but the underlying taurine-availability concern applies to cats too, and a simpler legume load is the safer default for at-risk cats. Shop on Amazon →
Where Acana holds its own
Six named animal proteins before any plant ingredient. Acana’s opening is extraordinary for cat food: chicken, trout, salmon, chicken meal, pollock meal, herring meal — six named animal proteins from four species (poultry, trout, salmon, pollock, herring) before any non-animal ingredient. For cats with rotating protein needs or sensitivities to single-protein formulas, Acana’s multi-protein architecture is unmatched in this comparison.
Earlier-position marine protein and freeze-dried cod. Trout at position two and salmon at position three put cold-water fish protein in the most-weighted slots. Freeze-dried cod appears in the deeper list as a freshness-preserving palatability concentrate. Cats benefit from naturally-occurring marine taurine and DHA from cold-water fish — Acana’s architecture delivers this more aggressively than Wellness CORE’s herring-meal-at-six positioning.
Organ meats and botanical-functional blend. Chicken liver and chicken heart appear in the deeper list, plus a botanical functional blend (turmeric, sarsaparilla root, althea root, rosehips, juniper berries, dried chicory root) that Wellness CORE does not match. Organ meats are the single most nutrient-dense animal-source ingredient class — concentrated taurine, B vitamins, iron, CoQ10. For owners drawn to whole-prey nutritional philosophy, Acana’s organ-meat density is meaningful. Shop on Amazon →
The bottom line
This is a genuine A/90 tie — both formulas earn an A grade and both deliver top-tier grain-free nutrition for an obligate carnivore. If you want the more prominent probiotic support and a turkey-and-chicken-led formula, Wellness CORE Grain-Free is the pick. If you want maximum multi-protein diversity, earlier-position cold-water fish, organ meats, and the WholePrey biologically-appropriate philosophy, Acana Highest Protein Indoor is the pick. Both clear the A-tier line and both are exceptional choices for premium cat nutrition. For more A-tier cat picks, see our best cat food for indoor cats guide.