Dog Nutrition Science and Welfare

Evidence-based dog nutrition prevents disease, supports longevity, and is foundational to companion dog welfare across every life stage.

Key Facts

Grain-free diets have been associated with dilated cardiomyopathy in dogs in FDA investigation — the link is under continued study
Obesity affects approximately 50 percent of pet dogs in Western countries and is the leading preventable welfare problem
Raw meat diets carry bacterial contamination risks including Salmonella and E. coli to both dogs and household humans
AAFCO and FEDIAF guidelines set minimum nutrient standards for dog foods that commercial complete diets must meet
Home-prepared raw and cooked diets require veterinary nutritionist formulation to avoid deficiencies and imbalances
Senior dogs have different protein and phosphorus requirements than adults — age-appropriate feeding supports organ health
Food allergies affect a small proportion of dogs — the most common allergens are proteins including beef, dairy, and chicken
Caloric restriction to maintain lean body weight is the most evidence-supported intervention for extending healthy lifespan

Welfare Considerations

Dog nutrition is a welfare foundation: what dogs eat determines their energy, organ health, body composition, and ultimately their longevity and quality of life. Obesity — the most prevalent preventable welfare problem in companion dogs — causes joint pain, breathing difficulty, and reduced lifespan that impair welfare significantly. The proliferation of novel diet trends including grain-free and raw feeding requires evidence literacy from dog owners: some trends have documented welfare risks while others are simply unvalidated. Evidence-based nutrition means using AAFCO-compliant commercial diets or veterinary nutritionist-formulated home diets, maintaining lean body condition, feeding age-appropriate nutrition, and recognizing individual variation including allergies and medical conditions.

What You Can Do

Body condition score your dog monthly and adjust feeding to maintain lean, healthy weight
Feed AAFCO-compliant commercial diets unless working with a veterinary nutritionist on a home-prepared alternative
Consult your veterinarian before starting a raw diet — understand the bacterial safety and nutritional risks
Be cautious about grain-free diets pending resolution of the DCM investigation
Adjust diet for life stage — puppies, adults, and seniors have genuinely different nutritional requirements
Treat obesity as a serious welfare problem requiring dietary intervention, not just an aesthetic concern