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: 87/100. 320 products. WSAVA-aligned. Country: US.

Royal Canin

Average score: 60/100. 419 products. WSAVA-aligned. Country: FR/US.

Verdict

On overall score, Hill's Science Diet wins by 27 points across the analyzed catalog (87 vs 60). Both brands are WSAVA-aligned. Catalog breadth: Royal Canin (419 products) is broader than the smaller line (320).