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: 87/100. 319 products. WSAVA-aligned. Country: US.

Blue Buffalo

Average score: 81/100. 324 products. Country: US.

Verdict

On overall score, Hill's Science Diet wins by 6 points across the analyzed catalog (87 vs 81). Hill's Science Diet is WSAVA-aligned (feeding trials, on-staff vet nutritionist, owned manufacturing); Blue Buffalo is not. Catalog breadth: Blue Buffalo (324 products) is broader than the smaller line (319).