Brand Comparison · 2026

Hill's Science Diet vs Wellness CORE

Hill's Science Diet (veterinarian-recommended premium kibble with the deepest prescription-diet portfolio on the market.) and Wellness CORE (higher-protein boutique kibble with partial wsava compliance.) compared head-to-head on WSAVA manufacturer-quality criteria, AAFCO substantiation, monthly cost, and which dog each is best for in 2026. Hill's Science Diet meets 5 of 5 WSAVA criteria. Hill's Science Diet is roughly 7% less than Wellness CORE.

Quick comparison

Dimension	Hill's Science Diet	Wellness CORE
Parent company	Colgate-Palmolive	WellPet
Category	Premium dry kibble	Boutique dry kibble
WSAVA criteria met	5 of 5	2 of 5
AAFCO substantiation	Feeding trials	Formulation only
Full-time veterinary nutritionist	Yes	Partial
Credentialed formulator	Yes	Partial
AAFCO feeding trials	Yes	No
Owns manufacturing plants	Yes	Yes
Quality control program	Yes	Yes
Typical monthly cost (50 lb dog)	$55 – $85 / month	$55 – $95 / month

Colgate-Palmolive

Hill's Science Diet

Veterinarian-recommended premium kibble with the deepest prescription-diet portfolio on the market.

Strengths

Most extensively used brand in US veterinary clinical practice
50+ years of feeding trial data from an owned research facility
Strong palatability across life stages
Pairs cleanly with Hill's Prescription Diet for any future therapeutic needs

Watch-outs

Higher price than Purina Pro Plan at comparable nutritional spec
Less breed-specific formulation than Royal Canin
Vitamin D toxicity recall in 2019 affected canned formulas

Best for: Healthy adult dogs where you want continuity from over-the-counter to prescription within a single brand.

Avoid if: You are highly price-sensitive and your dog has no medical conditions.

Visit Hill's Science Diet ↗

WellPet

Wellness CORE

Higher-protein boutique kibble with partial WSAVA compliance.

Strengths

Higher-protein formulations than mass-market alternatives
Owned manufacturing through WellPet
Consistent ingredient sourcing

Watch-outs

Formulation-only AAFCO substantiation
No full-time board-certified veterinary nutritionist on staff
Grain-free variants implicated in the FDA DCM investigation

Best for: Owners who want higher protein content and accept partial WSAVA compliance.

Avoid if: Your dog is at risk of diet-associated DCM or you specifically want feeding-trial-substantiated food.

Visit Wellness CORE ↗

Which is better for your dog?

The right pick depends on your individual dog. Hill's Science Diet is the better choice when: Healthy adult dogs where you want continuity from over-the-counter to prescription within a single brand. Wellness CORE is the better choice when: Owners who want higher protein content and accept partial WSAVA compliance.

On cost, Hill's Science Diet is roughly 7% less than Wellness CORE at the midpoint of typical premium spec for a 50 lb adult dog. On WSAVA manufacturer-quality criteria, Hill's Science Diet meets 5 of 5 vs 2 of 5 for Wellness CORE.

Personalized recommendation

Skip the brand decision — get a food matched to your specific dog.

IntelliBowl's free 60-second quiz ranks 13+ brands (including Hill's Science Diet and Wellness CORE) against your dog's age, breed, weight, activity, allergies, and budget. Free, no signup.

Take the free quiz →

Compare these brands against others

Methodology: WSAVA criteria reflect each brand's publicly documented manufacturer-quality practices as of May 2026, scored against the WSAVA Global Nutrition Committee's 5-question rubric. AAFCO substantiation reflects the dominant method used across the brand's main retail product line. Monthly cost reflects typical US 2026 retail for a 50 lb adult dog at premium spec, before autoship discounts. Recommendations are editorial and not influenced by affiliate relationships. See our recommendation methodology for IntelliBowl's quiz-engine ranking logic.