Cat and Dog Nutrition: Evidence-Based Feeding for Long-Term Welfare

Companion animal nutrition is a complex, marketing-saturated field. Evidence-based feeding decisions protect against both nutritional deficiency and fashion-driven dietary harm.

Key Facts

Dogs are omnivores; cats are obligate carnivores — their nutritional requirements are fundamentally different
Cats require taurine, arachidonic acid, and preformed vitamin A from animal sources — plant-based diets require careful supplementation
Grain-free diets have been associated with dilated cardiomyopathy in dogs — the mechanism is under investigation
Raw meat diets carry bacterial contamination risks (Salmonella, E. coli) for both pets and their human families
AAFCO (US) and FEDIAF (EU) nutritional standards guide commercial pet food formulation
Cheap commercial pet foods may meet AAFCO standards while using lower-quality ingredients — feeding trials provide stronger evidence than formulation alone

Welfare Considerations

Companion animal nutrition welfare spans both under-nutrition (feeding inadequate diets) and fashion-driven harm (grain-free diets associated with cardiac disease, raw meat diets with pathogen risks). Evidence-based feeding decisions acknowledge what is genuinely known (AAFCO/FEDIAF standards provide minimum requirements), what is uncertain (optimal ingredient quality, raw versus cooked), and what is established as harmful (grain-free diets in certain breeds, taurine-deficient cat diets). Veterinary nutritionists provide the most reliable guidance for individual animals with specific health needs. General population feeding is best guided by peer-reviewed evidence rather than marketing claims.

What You Can Do

Feed commercially prepared foods meeting AAFCO or FEDIAF standards as a welfare baseline
Seek veterinary nutritionist guidance if feeding raw, home-cooked, or unusual diets
Be cautious of grain-free diets for dogs until the DCM link is better understood
Ensure taurine adequacy in cat diets — taurine deficiency causes irreversible cardiac disease
Maintain healthy body weight through appropriate portion control — obesity is the most common nutrition-related welfare problem