Kirkland Signature Dog Food Ingredients

 According to our research, Kirkland Signature manufactures 13 dog food recipes using 118 unique ingredients. To evaluate the quality of ingredients used by Kirkland Signature, we've studied all 118 ingredients. In this article, we'll share our findings on Kirkland Signature ingredients.

Dog Food Recipes 13

Unique Ingredients 118

Artificial Colors 0

Animal By-Products 0

Anonymous Meats 1

Controversial 8

Harmful 0

First 5 Ingredients


Dog food ingredients in the United States are listed in descending order of pre-cooked weight. The first 5 ingredients typically constitute a significant portion of the recipe.


For Kirkland Signature, these are the most common ingredients found within the first 5 dog food ingredients.


    chicken

    chicken meal

    whole grain brown rice

    cracked pearled barley

    canola oil


As you can see, the most common first ingredient in Kirkland Signature is chicken. The most common 2nd ingredient is chicken meal, followed by whole grain brown rice, cracked pearled barley, and canola oil.

Artificial Food Coloring Dyes


Kirkland Signature does not use any artificial food coloring dyes. According to our records, none of the 13 Kirkland Signature dog foods contain artificial food dyes.


Artificial food coloring dyes are unnecessary and potentially harmful ingredients. In general, we not not recommend feeding any pet foods that contain artificial dyes.


In 2010, the CSPI raised serious concerns regarding the safety of many artificial dyes. Most of the studies referenced by the CSPI involved prolonged or excessive consumption. Since most dogs consume the same foods throughout their lives, concerns raised by the CSPI are alarming to say the least.


To read more about Artificial Food Dyes, click here.

Animal By-Products


According to our records, Kirkland Signature does not contain any animal by-products.


Animal by-products are basically the leftover parts of the the carcass after its been processed for meat. AAFCO defines by-products as the non-rendered, clean parts, other than meat, derived from slaughtered mammals.


Although by-products are still fairly nutritious ingredients, consumers have equated them with slaughterhouse waste. Therefore, most premium brands, including Kirkland Signature have decided to remove by-products and instead use named organ meats (beef liver, chicken gizzards).


For further reading on the controversy over animal by-products, click here.

Anonymous Meat Ingredients


Anonymous meats are animal-based ingredients which do not provide the source animal's name. These ingredients are controversial because they can come from almost any animal.


In addition, anonymous animal-based ingredients are very inexpensive and often the lowest quality meats that are still allowed to be used in pet food.


In general, we do not recommend feeding any products which contain anonymous meats. When in doubt, always contact the brand's customer service desk for further clarification.


Unfortunately, we've identified 1 anonymous meat ingredient used by Kirkland Signature.

fish meal

6 Recipes

Controversial Ingredients


In most cases, ingredients which are given the controversial classification can be substituted with higher-quality alternatives. You should evaluate each controversial ingredient independently to see if there is truly a valid cause for concern.


Keep in mind, certain sacrifices often must be made to produce dog foods at a reasonable price. In general, the more expensive the product, the fewer controversial ingredients you'll find.


In our analysis, we've identified 8 controversial ingredients inside Kirkland Signature products. These controversial ingredients are listed below. Click on each ingredient for more information.

powdered cellulose

1 Recipes

pea protein

2 Recipes

canola oil (preserved with mixed tocopherols)

1 Recipes

organic pea protein

1 Recipes

canola oil

3 Recipes

tomato pomace

4 Recipes

organic canola oil (preserved with mixed tocopherols)

1 Recipes

organic canola meal

1 Recipes

Potentially Harmful Ingredients


Harmful ingredients are those which have been linked to adverse health effects. In general, we do not recommend feeding any product which contains any harmful ingredients.


During our review, none of the Kirkland Signature ingredients analyzed were classified as harmful by our system. The absence of harmful ingredients is indicative of a relatively premium dog food brand.

Kirkland Signature Dog Food Ingredient Lists

Kirkland Signature

(Costco) Nature's Domain

Beef Meal & Sweet Potato Formula For Dogs

First Five Ingredients

beef meal

sweet potato

garbanzo bean

pea

canola oil

Kirkland Signature

(Costco) Nature's Domain

Chicken & Pea Formula For Puppies

First Five Ingredients

chicken

chicken meal

pea

garbanzo bean

lentil

Kirkland Signature

(Costco) Nature's Domain

Organic Chicken & Pea Formula For Dogs

First Five Ingredients

organic chicken

organic pea

organic lentil

organic garbanzo bean

organic sweet potato

Kirkland Signature

(Costco) Nature's Domain

Salmon Meal & Sweet Potato Formula For Dogs

First Five Ingredients

salmon meal

sweet potato

pea

potato

canola oil

Kirkland Signature

(Costco) Nature's Domain

Small Breed Salmon & Lentil Formula For Dogs

First Five Ingredients

salmon

salmon meal

lentil

chickpea

pea

Kirkland Signature

(Costco) Nature's Domain

Turkey Meal & Sweet Potato Formula For Dogs

First Five Ingredients

turkey meal

sweet potato

pea

potato

canola oil

Kirkland Signature

(Costco) Super Premium

Chicken, Rice & Egg Formula For Mature Senior Dogs

First Five Ingredients

chicken

chicken meal

whole grain brown rice

egg product

oatmeal

Kirkland Signature

(Costco) Super Premium

Chicken, Rice & Vegetable Formula For Adult Dogs

First Five Ingredients

chicken

chicken meal

whole grain brown rice

cracked pearled barley

chicken fat

Kirkland Signature

(Costco) Super Premium

Chicken, Rice & Vegetable Formula For Puppies

First Five Ingredients

chicken

chicken meal

whole grain brown rice

cracked pearled barley

egg product

Kirkland Signature

(Costco) Super Premium

Chicken, Rice & Vegetable Formula For Small Breed Dogs

First Five Ingredients

chicken

chicken meal

whole grain brown rice

cracked pearled barley

chicken fat

Kirkland Signature

(Costco) Super Premium

Healthy Weight Dog Formula With Chicken & Vegetables

First Five Ingredients

chicken meal

brown rice

pea

cracked pearled barley

millet

Kirkland Signature

(Costco) Super Premium

Lamb, Rice & Vegetable Formula For Adult Dogs

First Five Ingredients

lamb

lamb meal

whole grain brown rice

ground white rice

rice bran

Kirkland Signature

(Costco) Nature's Domain

Turkey & Pea Stew For Dogs

First Five Ingredients

turkey

turkey broth

vegetable broth

natural flavor

dried egg product


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