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Ziwi Peak vs Kirkland Signature

Ziwi Peak vs. Kirkland Signature

In this comparison article for Ziwi Peak vs Kirkland Signature, we'll highlight the key differences between these two pet food brands. To properly compare Ziwi Peak and Kirkland Signature, we'll use up-to-date nutritional and price information.

There are many factors to consider when choosing the best pet food brand for your pet. Factors such as ingredient quality, guaranteed analysis, product safety, brand history, and cost are among the most important factors to consider.

Throughout this Kirkland Signature vs Ziwi Peak comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Ziwi Peak Review Page or Kirkland Signature Review Page.

Guaranteed Analysis: Kirkland Signature vs. Ziwi Peak

According to AAFCO, all pet food labels must provide a guaranteed analysis of nutrient content. The analysis must provide guaranteed minimum percentages of crude protein and crude fat, and maximum percentages of crude fiber and moisture.

All percentages used in this comparison are averages reported on a dry matter basis.

Ziwi Peak Dog Food vs. Kirkland Signature Dog Food

Dry Dog Food Ziwi Peak Kirkland Signature
Crude Protein 45.1% 27.5%
Crude Fat 34.8% 15.3%
Crude Fiber 2.7% 5.4%
Wet/Canned Dog Food Ziwi Peak Kirkland Signature
Crude Protein 43.9% 44.4%
Crude Fat 26.0% 27.8%
Crude Fiber 7.6% 5.6%

Crude Protein Comparison For Dog Food

Protein is an extremely important part of your dog's diet. Without sufficient protein, dogs can develop a wide-range of serious health problems.

When you look at the average percentages of crude protein for dry dog food, it's clear that Ziwi Peak provides significantly more protein. On average, Ziwi Peak guarantees about 17.59% more protein than Kirkland Signature. For wet dog foods, Kirkland Signature and Ziwi Peak provide roughly the same amount of protein.


Crude Fat Comparison For Dog Food

Fats are an absolutely vital component of a balanced canine diet. Not only do fats provide energy, but they also serve important roles in the normal development and function of your dog's body. For example, fats help dogs produce prostaglandins, which reduce inflammation among many other significant functions.

The comparison table above shows that Ziwi Peak dry dog foods provide significantly more fat than Kirkland Signature. More specifically, Ziwi Peak guarantees at least 19.48% more fat. For wet dog foods, Kirkland Signature and Ziwi Peak provide roughly the same amount of fat.


According to our data, Kirkland Signature guarantees 2.70% more fiber than Ziwi Peak. Although this difference is relatively small, it's still a notable difference. In addition, Ziwi Peak wet dog foods also provide more fiber than Kirkland Signature wet foods.

Ziwi Peak Cat Food vs. Kirkland Signature Cat Food

Dry Cat Food Ziwi Peak Kirkland Signature
Crude Protein 45.5% 34.8%
Crude Fat 34.4% 15.9%
Crude Fiber 2.8% 5.9%

Crude Protein Comparison For Cat Food

Protein is an extremely important part of your cat's diet. Without sufficient protein, cats can develop a wide-range of serious health problems.

Ziwi Peak dry cat foods clearly provides more protein than Kirkland Signature. In fact, the difference between the protein content is roughly 10.68%, which is a significant amount.


Crude Fat Comparison For Cat Food

There are many ways in which dietary fat contributes to the overall health of our feline friends. Here is a short list of benefits provided by fats (not exhaustive):

  • Fats help with the digestion and absorption of fat-soluble vitamins
  • Reduce inflammation associated with arthritis
  • Slow the growth of yeast infections
  • Prevent or reduce the likelihood of certain heart problems.
  • Aid in the development of the retina and visual cortex.

On average, Ziwi Peak dry cat food recipes contain 18.52% more fat than Kirkland Signature recipes. Clearly, there is a significant difference between the fat content of Kirkland Signature and Ziwi Peak.


There is a small difference between the fiber content of Kirkland Signature and Ziwi Peak. We can see that Kirkland Signature guarantees about 3.16% more fiber than Ziwi Peak.

Ziwi Peak Pet Food Ingredients vs. Kirkland Signature Pet Food Ingredients

Here are some of the controversial ingredients used only by Ziwi Peak.

Lamb Plasma

Here are some of the controversial ingredients used only by Kirkland Signature.

Canola Oil
Pea Protein
Tomato Pomace
Powdered Cellulose
Organic Canola Meal
Organic Pea Protein
Canola Oil (Preserved With Mixed Tocopherols)
Organic Canola Oil (Preserved With Mixed Tocopherols)

Product Safety: Recall History of Ziwi Peak & Kirkland Signature?

According to our records, neither brand has issued any product recalls. Therefore, consumers have no reason to question the safety of Ziwi Peak or Kirkland Signature pet food products.


Disclosure: PawDiet has an affiliate relationship with stores featured (or linked-to) in this article. We are compensated for referring customers. Thank you for shopping with our retail partners!

Where To Buy Ziwi Peak Pet Foods

You can purchase Ziwi Peak pet foods from the following stores:


46 Recipes In-Stock Today

22 Recipes In-Stock Today

27 Recipes In-Stock Today

22 Recipes In-Stock Today

Where To Buy Kirkland Signature Pet Foods

You can purchase Kirkland Signature pet food products from these retailers:


Type Of Pet Foods Available

Product Ziwi Peak Kirkland Signature
Dry Dog Food 9 Recipes 12 Recipes
Wet Dog Food 9 Recipes 1 Recipes
Dog Treats 11 Treats
Dry Cat Food 8 Recipes 3 Recipes
Wet Cat Food 10 Recipes
Cat Treats

Compare Pet Food Prices Across Multiple Pet Stores