Hill's Science Diet vs Royal Canin

Two of the most-recommended veterinary-aligned brands. Both employ on-staff vet nutritionists; both run feeding trials.

Hill's Science Diet

Average score: 88/100. 315 products. WSAVA-aligned. Country: US.

Royal Canin

Average score: 61/100. 375 products. WSAVA-aligned. Country: FR/US.

Verdict

On overall score, Hill's Science Diet wins by 27 points across the analyzed catalog (88 vs 61). Both brands are WSAVA-aligned. Catalog breadth: Royal Canin (375 products) is broader than the smaller line (315).