Hill's Science Diet vs Blue Buffalo

Vet-aligned clinical nutrition vs natural-marketing positioning. Hill's checks every WSAVA box (own manufacturing, feeding trials, on-staff DACVNs); Blue Buffalo emphasizes ingredient sourcing and 'no by-products.'

Hill's Science Diet

Average score: 82/100. 212 products. WSAVA-aligned. Country: US.

Blue Buffalo

Average score: 48/100. 69 products. Country: US.

Verdict

On overall score, **Hill's Science Diet** wins by 34 points across the analyzed catalog (82 vs 48). Hill's Science Diet is WSAVA-aligned (feeding trials, on-staff vet nutritionist, owned manufacturing); Blue Buffalo is not. Catalog breadth: Hill's Science Diet (212 products) is broader than the smaller line (69).