Kirkland Signature Dog Food Review

Made by Diamond Pet Foods in US.

Average score: 50/100 across 6 dog food products.

Costco house brand. Co-manufactured by Diamond Pet Foods. Pricing-to-quality is unusually strong — same plants, fewer marketing dollars.

Top Kirkland Signature products

1. Kirkland Signature Nature's Domain Beef and Sweet Potato — 50/100
2. Kirkland Signature Nature's Domain Puppy — 50/100
3. Kirkland Signature Nature's Domain Salmon and Sweet Potato — 50/100
4. Kirkland Signature Nature's Domain Small Breed Salmon and Lentil — 50/100
5. Kirkland Signature Nature's Domain Turkey and Ancient Grains — 50/100

Frequently asked questions

Who makes Kirkland Signature pet food?

Kirkland Signature is manufactured by Diamond Pet Foods.

Where is Kirkland Signature made?

Kirkland Signature pet food is made in US.

Is Kirkland Signature WSAVA-aligned?

Kirkland Signature is not on our WSAVA-aligned shortlist. That doesn't automatically mean the food is poor quality — many strong brands haven't pursued WSAVA recognition — but it means we lack independent confirmation of feeding-trial validation and on-staff veterinary nutritionist staffing.

How does Kirkland Signature score in our analysis?

Kirkland Signature averages 50/100 across 6 products in our catalog. Individual product scores combine ingredient quality, AAFCO compliance, and controversial-additive severity. See the methodology page for the full algorithm.

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