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Protein Boost vs Supreme Source

Protein Boost is made by K9 Natural Foods Limited (owned by KKR (Natural Pet Food Group)), and Supreme Source by American Pet Nutrition (owned by Alphia (C.J. Foods)). On KibbleLab, Protein Boost averages 8.6 out of 10 across its scored foods, compared with 7.7 for Supreme Source. Protein Boost is accredited by the Pet Sustainability Coalition; Supreme Source is not.

Protein Boost and Supreme Source compared

Protein Boost Supreme Source
Manufacturer K9 Natural Foods Limited American Pet Nutrition
Parent company KKR (Natural Pet Food Group) Alphia (C.J. Foods)
Founded 2006 1972
Headquarters Christchurch, New Zealand Ogden, Utah, USA
Products listed 13 14
Serves 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.
Yes 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, and no one can pay for a higher score. How scoring works .
8.6 (avg of 13) 7.7 (avg of 14)
Recalls on record KibbleLab began logging recalls in July 2026, so earlier recalls may not appear.
None None
Where to buy Amazon Amazon

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Protein Boost vs Supreme Source: how they compare

Scores

Protein Boost scores higher on KibbleLab, averaging 8.6 out of 10 across 13 scored foods, compared with 7.7 across 14 for Supreme Source. Scores apply the same criteria-based rubric to every food, drawn from published veterinary science, and no one can pay for a higher score.

Who makes them

Protein Boost is made by K9 Natural Foods Limited, owned by KKR (Natural Pet Food Group), based in Christchurch, New Zealand, founded in 2006. Supreme Source is made by American Pet Nutrition, owned by Alphia (C.J. Foods), based in Ogden, Utah, USA, founded in 1972.

Standards and range

Neither meets WSAVA's published manufacturer criteria. Protein Boost is accredited by the Pet Sustainability Coalition; Supreme Source is not. KibbleLab lists 13 Protein Boost foods and 14 Supreme Source foods.

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Common Questions

Which scores higher on KibbleLab, Protein Boost or Supreme Source?

Protein Boost scores higher: it averages 8.6 out of 10 across 13 scored foods, compared with 7.7 for Supreme Source. Scores reflect published veterinary science, and no one can pay for a higher score.

Who makes Protein Boost and Supreme Source?

Protein Boost is made by K9 Natural Foods Limited, which is owned by KKR (Natural Pet Food Group). Supreme Source is made by American Pet Nutrition, which is owned by Alphia (C.J. Foods).

Which brand has more products on KibbleLab?

Supreme Source has 14 products in the KibbleLab database, compared with 13 for Protein Boost.

Where is each brand based?

Protein Boost is based in Christchurch, New Zealand. Supreme Source is based in Ogden, Utah, USA.

Are Protein Boost or Supreme Source PSC Accredited?

Protein Boost is a PSC Accredited business. The Pet Sustainability Coalition is a nonprofit that Accredits pet companies on their environmental and social impact, through third-party verification.

Have Protein Boost or Supreme Source been recalled?

Neither Protein Boost nor Supreme Source has a recall on record in the KibbleLab database. KibbleLab began logging recalls in July 2026, so earlier recalls may not appear.

See the full profiles: Protein Boost and Supreme Source .

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 and manufacturer notices, and a notice may name the parent company rather than the brand. KibbleLab began logging recalls in July 2026, so earlier recalls may not appear.

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.