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Health Extension vs Kirkland Signature

Health Extension vs. Kirkland Signature

In this comparison article for Health Extension vs Kirkland Signature, we'll highlight the key differences between these two pet food brands. To properly compare Health Extension 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 Health Extension comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Health Extension Review Page or Kirkland Signature Review Page.

Guaranteed Analysis: Kirkland Signature vs. Health Extension

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.

Health Extension Dog Food vs. Kirkland Signature Dog Food

Dry Dog Food Health Extension Kirkland Signature
Crude Protein 27.3% 27.5%
Crude Fat 16.5% 15.3%
Crude Fiber 4.9% 5.4%
Wet/Canned Dog Food Health Extension Kirkland Signature
Crude Protein 40.2% 44.4%
Crude Fat 28.0% 27.8%
Crude Fiber 6.7% 5.6%

Crude Protein Comparison For Dog Food

Dogs require twenty-two amino acids to sustain life. Twelve of these amino acids are synthesized naturally, the remaining ten are consumed. Protein is the nutrient which provides some or all of these ten essential amino acids.

As you can see, Health Extension and Kirkland Signature guarantee a similar amount of crude protein. For wet dog foods, Kirkland Signature provides more protein (about 4.22% more).


Crude Fat Comparison For Dog Food

Like protein, fats are an essential part of a dog's body. Fats are needed for the proper development and function of the canine body.

Kirkland Signature and Health Extension both provide roughly the same amount of crude fat. With regards to wet dog food, Health Extension and Kirkland Signature also provide roughly the same amount of crude fat.


There is a relatively insignificant difference between the crude fiber content of the two brands. With regards to wet dog food, Health Extension and Kirkland Signature also provide roughly the same amount of crude fiber.

Health Extension Cat Food vs. Kirkland Signature Cat Food

Dry Cat Food Health Extension Kirkland Signature
Crude Protein 38.6% 34.8%
Crude Fat 18.3% 15.9%
Crude Fiber 6.7% 5.9%

Crude Protein Comparison For Cat Food

Cats require twenty-two amino acids to sustain life. Eleven of these amino acids are synthesized naturally, the remaining eleven are consumed. Protein is the nutrient which provides some or all of these eleven essential amino acids.

If you look at the average percentages of crude protein, you'll notice that Health Extension typically guarantees 3.80% more protein. This is a fairly small difference between Health Extension and Kirkland Signature, but still worth mentioning.


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):

  • Help transport nutrients across cell membranes
  • Fats produce metabolites, which help control inflammation
  • Maintain healthy blood pressure
  • Slow the growth of yeast infections
  • Fats improve the taste/texture of food.

According to our data, Health Extension guarantees 2.41% more fat than Kirkland Signature. Although this difference is relatively small, it's still a notable difference.


Both brands provide roughly the same amount of crude fiber.

Health Extension Pet Food Ingredients vs. Kirkland Signature Pet Food Ingredients

Health Extension and Kirkland Signature both use the following controversial ingredients in many of their products:

Canola Oil
Pea Protein
Tomato Pomace

Here are some of the controversial ingredients used only by Health Extension.

Liver
Garlic
Beet Pulp
Buffered Garlic

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

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

We believe that certain pet food ingredients are linked to adverse health affects; these ingredients are classified as harmful.

Here are some of the harmful ingredients used only by Health Extension.

Added Color
Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Health Extension & Kirkland Signature?

According to our records, neither brand has issued any product recalls. Therefore, consumers have no reason to question the safety of Health Extension 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 Health Extension Pet Foods

You can purchase Health Extension pet foods from the following stores:


52 Recipes In-Stock Today

30 Recipes In-Stock Today

3 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 Health Extension Kirkland Signature
Dry Dog Food 12 Recipes 12 Recipes
Wet Dog Food 15 Recipes 1 Recipes
Dog Treats 9 Treats
Dry Cat Food 2 Recipes 3 Recipes
Wet Cat Food 13 Recipes
Cat Treats

Compare Pet Food Prices Across Multiple Pet Stores