Brand Comparison · 2026

Blue Buffalo vs Merrick

Blue Buffalo (mid-premium kibble marketed on ingredient quality; partial WSAVA compliance) and Merrick (premium-tier kibble from a Nestlé Purina brand that meets 1 of WSAVA's 5 questions on its own published evidence) compared head-to-head on WSAVA manufacturer-quality criteria, AAFCO substantiation, monthly cost, and which dog each is best for in 2026. Blue Buffalo meets 2 of 5 WSAVA criteria. Blue Buffalo is roughly 20% less than Merrick.

The verdict

Blue Buffalo meets 2 of 5 WSAVA questions and Merrick meets 1 of 5, at $50-90/month and $60-115/month. Merrick's range reaches higher and its score is lower. Blue Buffalo reports a full-time PhD nutritionist and publishes ingredient and finished-product testing. Merrick's FAQ names no nutritionist and its current pages describe no testing program. Merrick does win on plants: it is made in Hereford, Texas facilities that Nestlé Purina runs, while Blue Buffalo reports owning about 80% of its plants.

Choose Blue Buffalo when ingredient transparency and a stated nutrition credential matter to you. Choose Merrick when you want the Purina-run plants and are shopping the premium tier anyway. Blue Buffalo's label and Merrick's FAQ both say the food is formulated to AAFCO profiles, so neither has feeding-trial substantiation. A veterinarian should guide diets for medical conditions.

Key differences at a glance

Different makers: Blue Buffalo is General Mills; Merrick is Nestlé Purina.
WSAVA manufacturer-quality: Blue Buffalo meets 2 of 5 criteria vs 1 of 5 for Merrick.
Monthly cost: Blue Buffalo runs roughly 20% less than Merrick for a typical 50 lb dog.
Heart-health context: both Blue Buffalo and Merrick appear in the FDA's diet-related DCM investigation, which has not established that any food caused the disease.

Quick comparison

Dimension	Blue Buffalo	Merrick
Parent company	General Mills	Nestlé Purina
Category	Boutique dry kibble	Premium dry kibble
WSAVA criteria met	2 of 5	1 of 5
AAFCO substantiation	Formulation only	Formulation only
Full-time veterinary nutritionist	Yes	Partial
Credentialed formulator	Partial	Partial
AAFCO feeding trials	No	No
Owns manufacturing plants	Partial	Yes
Quality control program	Yes	Partial
Typical monthly cost (50 lb dog)	$50 – $90 / month	$60 – $115 / month

General Mills

Blue Buffalo

Mid-premium kibble marketed on ingredient quality; partial WSAVA compliance.

Strengths

Strong consumer-facing ingredient transparency
Wide retail availability and brand recognition
Acquired by General Mills (2018) added scale and QC discipline

Watch-outs

Formulation-only substantiation (no feeding trials)
Does not own all manufacturing: reports owning about 80% of its plants and still uses a co-manufacturer
Caught up in past lawsuits over advertising claims
Named in 31 reports in the FDA's 2019 DCM update. The FDA did not establish that any food caused the disease

Best for: Owners who prioritize ingredient-list transparency over WSAVA manufacturer-quality criteria.

Avoid if: You specifically want a brand that meets all 5 WSAVA criteria.

Visit Blue Buffalo ↗

Nestlé Purina

Merrick

Premium-tier kibble from a Nestlé Purina brand that meets 1 of WSAVA's 5 questions on its own published evidence.

Strengths

Made in the Hereford, Texas plants that Nestlé Purina runs
Merrick's FAQ says trained animal nutritionists, including PhDs, formulate the food
The Hereford plant earned SQF Level 3 certification in 2013

Watch-outs

No nutritionist is named and no board certification is stated
The FAQ says formulated to AAFCO profiles, with no feeding-test claim
Quality-control evidence is a 2013 certificate. Merrick's current pages describe no testing program
Named in 16 reports in the FDA's 2019 DCM update. The FDA did not establish that any food caused the disease

Best for: Owners shopping the premium kibble tier who accept thinner public evidence on nutrition staff and testing.

Avoid if: You want a named nutritionist, feeding-trial substantiation or a published testing program.

Visit Merrick ↗

Which is better for your dog?

The right pick depends on your individual dog. Blue Buffalo is the better choice when: Owners who prioritize ingredient-list transparency over WSAVA manufacturer-quality criteria. Merrick is the better choice when: Owners shopping the premium kibble tier who accept thinner public evidence on nutrition staff and testing.

On cost, Blue Buffalo is roughly 20% less than Merrick at the midpoint of typical premium spec for a 50 lb adult dog. On WSAVA manufacturer-quality criteria, Blue Buffalo meets 2 of 5 vs 1 of 5 for Merrick.

Checking one brand rather than the pair? See is Blue Buffalo WSAVA-approved or is Merrick WSAVA-approved.

Where to buy

Made your pick?

Check current pricing on whichever brand fits your dog. Prices and promotions change frequently, so it is worth comparing both before you commit to a bag or a subscription.

Shop Blue Buffalo on Chewy →Shop Merrick on Chewy →

Disclosure: these are affiliate links and IntelliBowl may earn a commission at no extra cost to you. Commission does not influence the comparison above. See our methodology.

Personalized recommendation

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

IntelliBowl's free 60-second quiz ranks 14+ brands (including Blue Buffalo and Merrick) against your dog's age, breed, weight, activity, allergies, and budget. Completely free.

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Compare these brands against others

Methodology: WSAVA criteria reflect each brand's publicly documented manufacturer-quality practices as of October 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.