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Purina Pro Plan vs Kirkland Signature

Purina Pro Plan vs. Kirkland Signature

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

Guaranteed Analysis: Kirkland Signature vs. Purina Pro Plan

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.

Purina Pro Plan Dog Food vs. Kirkland Signature Dog Food

Dry Dog Food Purina Pro Plan Kirkland Signature
Crude Protein 32.1% 27.5%
Crude Fat 17.9% 15.3%
Crude Fiber 4.3% 5.4%
Wet/Canned Dog Food Purina Pro Plan Kirkland Signature
Crude Protein 45.5% 44.4%
Crude Fat 19.5% 27.8%
Crude Fiber 7.0% 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.

There is a relatively large difference between the protein content of Purina Pro Plan and Kirkland Signature. On average, Kirkland Signature dry dog food recipes contain 4.55% less protein than Purina Pro Plan recipes. For wet dog foods, Purina Pro Plan and Kirkland Signature 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.

There is a small difference between the fat content of Purina Pro Plan and Kirkland Signature. We can see that Purina Pro Plan guarantees about 2.61% more fat than Kirkland Signature. In addition, Kirkland Signature wet dog foods also provide more fat than Purina Pro Plan wet foods.


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

Purina Pro Plan Cat Food vs. Kirkland Signature Cat Food

Dry Cat Food Purina Pro Plan Kirkland Signature
Crude Protein 44.2% 34.8%
Crude Fat 17.0% 15.9%
Crude Fiber 3.8% 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.

The comparison table above shows that Purina Pro Plan dry cat foods provide significantly more protein than Kirkland Signature. More specifically, Purina Pro Plan guarantees at least 9.37% more protein.


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.

Both brands provide roughly the same amount of crude fat.


According to our average data, Purina Pro Plan typically provides less fiber than Kirkland Signature. However, this difference is relatively small and doesn't represent a significant difference between the two brands.

Purina Pro Plan Pet Food Ingredients vs. Kirkland Signature Pet Food Ingredients

Purina Pro Plan and Kirkland Signature both use the following controversial ingredients in many of their products:

Canola Oil
Pea Protein
Powdered Cellulose

Here are some of the controversial ingredients used only by Purina Pro Plan.

Liver
Poultry
Corn Grits
Canola Meal
Brewers Rice
Ground Wheat
Wheat Gluten
Animal Digest
Caramel Color
Garlic Powder
Soybean Flour
Soybean Hulls
Vegetable Oil
Corn Germ Meal
Poultry Giblets
Corn Gluten Meal
Dried Corn Syrup
Meat By-Products
Whole Grain Corn
Whole Grain Wheat
Ground Yellow Corn
Chicken By-Products
Poultry By-Products
Chicken By-Product Meal
Poultry By-Product Meal
Soybean Protein Isolate
Soybean Protein Concentrate
Animal Fat (Preserved With Mixed Tocopherols)

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

Tomato Pomace
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 Purina Pro Plan.

Bha
Bht
Corn Oil
Yellow 5
Added Color
Menadione Sodium Bisulfate Complex
Menadione Sodium Bisulfite Complex
Pork Fat (Preserved With Tbhq And Citric Acid)
Animal Fat (Preserved With Tbhq And Citric Acid)

Product Safety: Recall History of Purina Pro Plan & Kirkland Signature?

Purina Pro Plan has been recalled once.

  • March 9, 2016: Incorrect Vitamins and Minerals

According to our records, Kirkland Signature has never been recalled.


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 Purina Pro Plan Pet Foods

You can purchase Purina Pro Plan pet foods from the following stores:


134 Recipes In-Stock Today

93 Recipes In-Stock Today

124 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 Purina Pro Plan Kirkland Signature
Dry Dog Food 53 Recipes 12 Recipes
Wet Dog Food 43 Recipes 1 Recipes
Dog Treats
Dry Cat Food 31 Recipes 3 Recipes
Wet Cat Food 84 Recipes
Cat Treats

Compare Pet Food Prices Across Multiple Pet Stores