Kirkland Signature Cat Food Review

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If you have ever stepped foot into a Costco, then you have most likely seen a bag of Kirkland Signature cat food. Kirkland is a brand-specific to Costco, available both online and in every one of their retail locations. Even though Costco itself is extremely popular, how does its cat food rank among other brands?

Let’s find out in this honest Kirkland Signature cat food review!

For this review, I will be focusing on the Nature’s Domain Salmon Meal & Potato formula.

*Disclaimer: This website contains affiliate links and I may earn a commission from qualifying purchases as an Amazon Affiliate when you click on the links on this post at no additional cost to you. Read my full disclaimer here*

kirkland cat food

My Honest Kirkland Signature Cat Food Review


Name: Kirkland

Website URL:

Flavors Available: Salmon Meal & Potato and Chicken & Rice

Formulas Available: Maintenance, Healthy Weight, and Nature’s Domain

Sizes Available: 18 pounds, 20 pounds, and 25 pounds

Price: Varies

Overall Rating: paw print ratingpaw print ratingpaw print rating


Pros. vs. Cons.


  • Plenty of high-quality protein ingredients
  • Affordable for a large quantity


  • Too many pea ingredients
  • Only large-sized bags available
  • Mixed cat owner reviews


Guaranteed Analysis

Crude Protein       32.0% Minimum

Crude Fat             14.0% Minimum

Crude Fiber          3.0% Maximum

Moisture               10.0% Maximum

Zinc                     120 mg/kg Minimum

Selenium              0.3 mg/kg Minimum

Vitamin E              150 IU/kg Minimum

Taurine                 0.15% Minimum

Omega-6 Fatty Acids*    2.4% Minimum

Omega-3 Fatty Acids*    0.3% Minimum

Total Microorganisms*    Not Less Than 1,000,000 CFU/lb

(Lactobacillus acidophilus, Bifidobacterium animalis)



Salmon meal, ocean fish meal, sweet potatoes, peas, potatoes, pea protein, canola oil, natural flavor, choline chloride, DL-methionine, taurine, dried chicory root, tomatoes, blueberries, raspberries, yucca schidigera extract, dried Lactobacillus acidophilus fermentation product, dried Bifidobacterium animalis fermentation product, zinc proteinate, vitamin E supplement, niacin, manganese proteinate, copper proteinate, zinc sulfate, manganese sulfate, copper sulfate, thiamine mononitrate (vitamin B1), vitamin A supplement, biotin, potassium iodide, calcium pantothenate, riboflavin (vitamin B2), pyridoxine hydrochloride (vitamin B6), vitamin B12 supplement, manganous oxide, sodium selenite, vitamin D supplement, folic acid.


Ingredient Breakdown

Salmon Meal

This is a high-quality protein source that can contain as much as 300% more protein than salmon contains by itself.

Ocean Fish Meal

This is another high-quality protein that can contain as much as 300% more protein than ocean fish contains alone. Usually, this ingredient refers to small marine fish and can often refer to bones and offal leftovers from the fish processing process. 

Sweet Potatoes

This is a low-fat ingredient that is typically used as a source of carbohydrates. It is also a source of Vitamin A, Vitamin B6, Calcium, Iron, Vitamin C, and Potassium.


This ingredient is a plant-based source of carbohydrates, dietary fiber, Vitamin K, and Manganese.


This ingredient is typically used as a source of complex carbohydrates. It is also an ingredient that is used as a source of potassium.

Pea Protein

This ingredient is only used to help inflate the protein on the label. It is not considered too beneficial for cats.

Canola Oil

This ingredient is a known source of linoleic acid.

Natural Flavor

This ingredient is typically used as a flavoring agent. It is made using a variety of meat, fruit, and vegetable sources.

Choline Chloride

This is an essential mineral that is required in both dog and cat food formulas. It is typically found in the liver and eggs.


This is an ingredient that is typically added to pet food to help reduce the acid level in urine.


This ingredient is an essential amino acid that is required for cats. It helps to support a healthy cardiovascular system.

Dried Chicory Root

This ingredient is an excellent source of fiber which can help support a healthy digestive system.


This ingredient is a natural antioxidant that is also a source of Vitamin C, Potassium, Vitamin K, and folate.


This ingredient is rich in antioxidants, dietary fiber, Vitamin C, Vitamin K, and Manganese.


This is another ingredient that is rich in antioxidants. It is a low-calorie ingredient that is rich in dietary fiber, Vitamin C, Vitamin K, Iron, Vitamin E, Manganese, Magnesium, Phosphorus, Potassium, and Copper.


Flavors, Sizes, and Price

Kirkland Maintenance Chicken and Rice Formula

This formula from Kirkland is made with ideal protein sources, and optimal kibble size, and packed full of natural antioxidants your cat will love.

Sizes Available: 25 pounds


Kirkland Signature Nature’s Domain Salmon Meal and Sweet Potato 

If you want to spoil your cat with a delicious meal, then look no further. This formula is loaded with plenty of salmon, a few grain-free ingredients, and natural minerals, cats of all ages will benefit from it.

Sizes Available: 18 pounds


Kirkland Signature Cat Food Reviews by Cat Owners

Many of the cat owners who have left reviews of Kirkland Signature cat food tend to be pretty happy with the food and its results on their beloved felines. Let’s take a closer look to see what pet owners are saying about this food.

“My cat appears satisfied with this stuff. My cat has been eating this food for a few weeks without complaint. His poop appears to be consistent and solid. Decent quantity for the price.” -Michael H. November 13th

“Digested well by my cats. This excellent product seems to reduce the amount of vomiting my cat has had due to other brands.” -Dany France Racine, November 12th


Kirkland Signature Cat Food: The Bottomline

By looking carefully at Kirkland Signature cat food, this brand actually isn’t that bad. While the ingredients do consist of too many pea ingredients for my taste, you can’t beat a good deal of a large amount of kibble for such a little price. If you have the money and want to give this food a try, I highly recommend it.

Final Verdict:


Have you tried feeding your cat Kirkland Signature cat food? If so, what did they think of it? Let me know in the comments section below!

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Kirkland cat food


Digital marketing specialist and Internet enthusiast. When Vanessa isn't working on or other marketing ventures, she spends her time making homemade dog treats and reading up on the latest advances in the veterinarian field.

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