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Kirkland Signature vs Whole Life Pet

Kirkland Signature is branded by Costco Wholesale Corporation and made by third-party co-packers, and Whole Life Pet is made by Whole Life Pet Products, LLC, and both make food for cats and dogs. On KibbleLab, Kirkland Signature averages 8.6 out of 10 across its scored foods, compared with 8.3 for Whole Life Pet. Kirkland Signature's maker dates to 1983, while Whole Life Pet's launched in 2007.

Kirkland Signature and Whole Life Pet compared

Kirkland Signature Whole Life Pet
Manufacturer Costco Wholesale Corporation Whole Life Pet Products, LLC
Parent company Independent Independent
Founded 1983 2007
Headquarters Issaquah, Washington, USA Pittsfield, Massachusetts, USA
Manufacturing Whether a brand makes its own food in-house or has it produced by an outside contract manufacturer or co-packer.
Co-packer In-house
Made in USA United States
Manufacturing region Not listed Massachusetts
Products listed 17 21
Serves Cats & dogs Cats & dogs
Price tier A relative price guide, from $ (most affordable) to $$$$$ (most premium), based on the brand's typical retail cost.
$$ $$$$
WSAVA guidelines The World Small Animal Veterinary Association (WSAVA) publishes criteria for evaluating a manufacturer: qualified nutritionists on staff, feeding trials, and published research. It does not certify or endorse brands.
No No
PSC accredited The Pet Sustainability Coalition is a nonprofit that accredits pet companies on their environmental and social impact, through third-party verification. It reflects sustainability practices, not food quality.
No No
Score The average KibbleLab score across this brand's scored foods, on a 0 to 10 scale. Foods are scored on published veterinary science. How scoring works .
8.6 (avg of 17) 8.3 (avg of 21)
Recalls on record We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
None None
Where to buy
Amazon
Amazon

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Kirkland Signature vs Whole Life Pet: how they compare

Scores

Kirkland Signature scores higher on KibbleLab, averaging 8.6 out of 10 across 17 scored foods, compared with 8.3 across 21 for Whole Life Pet. Scores apply the same criteria-based rubric to every food, drawn from published veterinary science.

Who makes them

Kirkland Signature is a brand of Costco Wholesale Corporation, based in Issaquah, Washington, USA, founded in 1983. Its food is made by third-party co-packers in USA. Whole Life Pet is made by Whole Life Pet Products, LLC, an independent maker, based in Pittsfield, Massachusetts, USA, founded in 2007.

Standards and range

Neither meets WSAVA's published manufacturer criteria. KibbleLab lists 17 Kirkland Signature foods and 21 Whole Life Pet foods.

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Common Questions

Which scores higher on KibbleLab, Kirkland Signature or Whole Life Pet?

Kirkland Signature scores higher: it averages 8.6 out of 10 across 17 scored foods, compared with 8.3 for Whole Life Pet. Scores reflect published veterinary science.

Who makes Kirkland Signature and Whole Life Pet?

Kirkland Signature is a brand of Costco Wholesale Corporation. Its food is made by third-party co-packers in USA. Whole Life Pet is made by Whole Life Pet Products, LLC.

Which brand has more products on KibbleLab?

Whole Life Pet has 21 products in the KibbleLab database, compared with 17 for Kirkland Signature.

Where is each brand based?

Kirkland Signature is based in Issaquah, Washington, USA. Whole Life Pet is based in Pittsfield, Massachusetts, USA.

Have Kirkland Signature or Whole Life Pet been recalled?

Neither Kirkland Signature nor Whole Life Pet has a recall on record in the KibbleLab database. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.

See the full profiles: Kirkland Signature and Whole Life Pet .

More comparisons

KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.

This is a neutral, factual comparison, not a ranking or an endorsement of either brand. KibbleLab may earn affiliate commissions through links. No one can pay for placement or a higher score.

Brand and manufacturer details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing. Recall data is compiled from public FDA filings, and a filing may name the parent company rather than the brand. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.

KibbleLab scores and commentary are editorial opinions based on published data. Represent one of these brands? Request a correction. Anyone else can email us. See our Terms.