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Protein Boost vs Ziwi

Protein Boost is made by K9 Natural Foods Limited (owned by KKR (Natural Pet Food Group)), and Ziwi by Ziwi Limited (owned by FountainVest Partners). On KibbleLab, Ziwi averages 8.8 out of 10 across its scored foods, compared with 8.6 for Protein Boost. Protein Boost makes food for dogs, while Ziwi covers cats and dogs.

Protein Boost and Ziwi compared

Protein Boost Ziwi
Manufacturer K9 Natural Foods Limited Ziwi Limited
Parent company KKR (Natural Pet Food Group) FountainVest Partners
Founded 2006 2002
Headquarters Christchurch, New Zealand Mount Maunganui, Bay of Plenty, New Zealand
Products listed 13 15
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 Yes
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) 8.8 (avg of 15)
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 Ziwi: how they compare

Scores

Ziwi scores higher on KibbleLab, averaging 8.8 out of 10 across 15 scored foods, compared with 8.6 across 13 for Protein Boost. 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. Ziwi is made by Ziwi Limited, owned by FountainVest Partners, based in Mount Maunganui, Bay of Plenty, New Zealand, founded in 2002.

Standards and range

Neither meets WSAVA's published manufacturer criteria. Both are accredited by the Pet Sustainability Coalition. KibbleLab lists 13 Protein Boost foods and 15 Ziwi foods.

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Common Questions

Which scores higher on KibbleLab, Protein Boost or Ziwi?

Ziwi scores higher: it averages 8.8 out of 10 across 15 scored foods, compared with 8.6 for Protein Boost. Scores reflect published veterinary science, and no one can pay for a higher score.

Who makes Protein Boost and Ziwi?

Protein Boost is made by K9 Natural Foods Limited, which is owned by KKR (Natural Pet Food Group). Ziwi is made by Ziwi Limited, which is owned by FountainVest Partners.

Which brand has more products on KibbleLab?

Ziwi has 15 products in the KibbleLab database, compared with 13 for Protein Boost.

Where is each brand based?

Protein Boost is based in Christchurch, New Zealand. Ziwi is based in Mount Maunganui, Bay of Plenty, New Zealand.

Are Protein Boost or Ziwi PSC Accredited?

Both Protein Boost and Ziwi are PSC Accredited businesses. The Pet Sustainability Coalition is a nonprofit that Accredits pet companies on their environmental and social impact.

Have Protein Boost or Ziwi been recalled?

Neither Protein Boost nor Ziwi 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 Ziwi .

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.