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Under The Sun vs Kirkland Signature

Under The Sun vs. Kirkland Signature

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

Guaranteed Analysis: Kirkland Signature vs. Under The Sun

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.

Under The Sun Dog Food vs. Kirkland Signature Dog Food

Dry Dog Food Under The Sun Kirkland Signature
Crude Protein 27.5% 27.5%
Crude Fat 12.1% 15.3%
Crude Fiber 4.6% 5.4%
Wet/Canned Dog Food Under The Sun Kirkland Signature
Crude Protein 41.1% 44.4%
Crude Fat 24.5% 27.8%
Crude Fiber 6.1% 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, Under The Sun and Kirkland Signature guarantee a similar amount of crude protein. For wet dog foods, Kirkland Signature typically provides a little more protein (about 3.38% 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.

If you look at the average percentages of crude fat, you'll notice that Kirkland Signature typically guarantees 3.21% more fat. This is a fairly small difference between Kirkland Signature and Under The Sun, but still worth mentioning. In addition, Kirkland Signature wet dog foods also provide more fat than Under The Sun wet foods.


Under The Sun and Kirkland Signature both provide roughly the same amount of crude fiber. With regards to wet dog food, Under The Sun and Kirkland Signature also provide roughly the same amount of crude fiber.

Under The Sun Pet Food Ingredients vs. Kirkland Signature Pet Food Ingredients

Under The Sun and Kirkland Signature both use the following controversial ingredients in many of their products:

Canola Oil
Pea Protein

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

Tomato Pomace
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 Under The Sun.

Menadione Sodium Bisulfate Complex
Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Under The Sun & Kirkland Signature?

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

You can purchase Under The Sun pet foods from the following stores:


8 Recipes In-Stock Today

8 Recipes In-Stock Today

10 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 Under The Sun Kirkland Signature
Dry Dog Food 7 Recipes 12 Recipes
Wet Dog Food 8 Recipes 1 Recipes
Dog Treats
Dry Cat Food 3 Recipes
Wet Cat Food 9 Recipes
Cat Treats

Compare Pet Food Prices Across Multiple Pet Stores