Kirkland Signature Nature’s Domain Dog Food Review (Dry)

Rating:

Kirkland Signature Nature’s Domain Dog Food receives the Advisor’s mid-tier rating of 3.5 stars.

The Kirkland Signature Nature’s Domain product line includes 5 dry dog foods.

Each recipe below includes its related AAFCO nutrient profile when available on the product’s official webpage: Growth, Maintenance, All Life Stages, Supplemental or Unspecified.

Important: Because many websites do not reliably specify which Growth or All Life Stages recipes are safe for large breed puppies, we do not include that data in this report. Be sure to check actual packaging for that information.

Use links below to compare price and package sizes at Amazon.

Nature’s Domain Beef Meal and Sweet Potato was selected to represent the other products in the line for this review.

Nature's Domain Beef Meal and Sweet Potato

Dry Dog Food

Estimated Dry Matter Nutrient Content

Protein = 27% | Fat = 16% | Carbs = 50%

Ingredients: Beef meal, sweet potatoes, garbanzo beans, peas, canola oil, egg product, pea flour, tomato pomace, flaxseed, brewers yeast, natural flavor, potato protein, pea protein, salmon oil (a source of DHA), salt, choline chloride, dried chicory root, Yucca schidigera extract, tomatoes, blueberries, raspberries, dried Lactobacillus acidophilus fermentation product, dried Bifidobacterium animalis fermentation product, dried Lactobacillus reuteri fermentation product, vitamin E supplement, iron proteinate, zinc proteinate, copper proteinate, ferrous sulfate, zinc sulfate, copper sulfate, potassium iodide, thiamine mononitrate (vitamin B1), manganese proteinate, manganous oxide, ascorbic acid, vitamin A supplement, biotin, niacin, calcium pantothenate, manganese sulfate, sodium selenite, pyridoxine hydrochloride (vitamin B6), vitamin B12 supplement, riboflavin (vitamin B2), vitamin D supplement, folic acid

Fiber (estimated dry matter content) = 6.1%

Red denotes controversial item

Estimated Nutrient Content
MethodProteinFatCarbs
Guaranteed Analysis24%14%NA
Dry Matter Basis27%16%50%
Calorie Weighted Basis23%33%44%
Protein = 23% | Fat = 33% | Carbs = 44%

The first ingredient in this dog food is beef meal. Beef meal is considered a meat concentrate and contains nearly 300% more protein than fresh beef.

The second ingredient is sweet potato. Sweet potatoes are a gluten-free source of complex carbohydrates in a dog food. They are naturally rich in dietary fiber and beta carotene.

The third ingredient includes garbanzo beans, also known as chickpeas. Like peas, beans and lentils, the chickpea is a nutritious member of the fiber-rich legume (pulse) family of vegetables.

Garbanzos contain about 22% protein, something which must be considered when evaluating the total protein reported in this food.

The fourth ingredient lists peas. Peas are a quality source of carbohydrates. And like all legumes, they’re rich in natural fiber.

However, peas contain about 25% protein, a factor that must be considered when judging the meat content of this dog food.

The fifth ingredient is canola oil. Unfortunately, canola can be a controversial item. That’s because it can sometimes (but not always) be derived from genetically modified rapeseed.

Yet others cite the fact canola oil can be a significant source of essential omega-3 fatty acids.

In any case, plant-based oils like canola are less biologically available to a dog than fish oil as a source of quality omega-3 fats.

The sixth ingredient includes egg product, an unspecified (wet or dry?) form of shell-free eggs. Quality can vary significantly. Lower grade egg product can even come from commercial hatcheries — from eggs that have failed to hatch.

In any case, eggs are easy to digest and have an exceptionally high biological value.

The seventh ingredient is pea flour, a powder made from roasted yellow peas. Pea flour contains as much as 25% protein, a factor that must be considered when judging the meat content of this dog food.

The eighth ingredient is tomato pomace. Tomato pomace is a controversial ingredient, a by-product remaining after processing tomatoes into juice, soup and ketchup.

Many praise tomato pomace for its high fiber and nutrient content, while others scorn it as an inexpensive pet food filler.

Just the same, there’s probably not enough tomato pomace here to make much of a difference.

The ninth ingredient lists flaxseed, one of the best plant sources of healthy omega-3 fatty acids. Provided they’ve first been ground into a meal, flax seeds are also rich in soluble fiber.

However, flaxseed contains about 19% protein, a factor that must be considered when judging the actual meat content of this dog food.

From here, the list goes on to include a number of other items.

But to be realistic, ingredients located this far down the list (other than nutritional supplements) are not likely to affect the overall rating of this product.

With five notable exceptions

First, brewers yeast can be a controversial item. Although it’s a by-product of the beer making process, this ingredient is rich in minerals and other healthy nutrients.

Fans believe yeast repels fleas and supports the immune system.

Critics argue yeast ingredients can be linked to allergies. This may be true, but (like all allergies) only if your particular dog is allergic to the yeast itself.

In addition, a vocal minority insists yeast can increase the risk of developing the life-threatening condition known as bloat. However, this is a claim we’ve not been able to scientifically verify.

In any case, unless your dog is specifically allergic to it, yeast can still be considered a nutritious additive.

What’s more noteworthy here is that brewers yeast contains about 48% protein, a factor that must be considered when judging the actual meat content of this dog food.

Next, we note the use of potato protein, the dry residue remaining after removing the starchy part of a potato.

Even though it contains over 80% protein, this ingredient would be expected to have a lower biological value than meat.

And less costly plant-based products like this can notably boost the total protein reported on the label — a factor that must be considered when judging the actual meat content of this dog food.

In addition, this recipe also includes pea protein, what remains of a pea after removing the starchy part of the vegetable.

Even though it contains over 80% protein, this ingredient would be expected to have a lower biological value than meat — a factor that must be considered when judging the meat content of this dog food.

Next, chicory root is rich in inulin, a starch-like compound made up of repeating units of carbohydrates and found in certain roots and tubers.

Not only is inulin a natural source of soluble dietary fiber, it’s also a prebiotic used to promote the growth of healthy bacteria in a dog’s digestive tract.

And lastly, this food contains chelated minerals, minerals that have been chemically attached to protein. This makes them easier to absorb. Chelated minerals are usually found in better dog foods.

Kirkland Signature Nature’s Domain Dog Food Review

Judging by its ingredients alone, Kirkland Signature Nature’s Domain Dog Food looks like an above-average dry product.

But ingredient quality by itself cannot tell the whole story. We still need to estimate the product’s meat content before determining a final rating.

The dashboard displays a dry matter protein reading of 27%, a fat level of 16% and estimated carbohydrates of about 50%.

As a group, the brand features an average protein content of 27% and a mean fat level of 15%. Together, these figures suggest a carbohydrate content of 50% for the overall product line.

And a fat-to-protein ratio of about 57%.

Near-average protein. Near-average fat. And near-average carbs when compared to a typical dry dog food.

When you consider the protein-boosting effect of the garbanzo beans, pea products, flaxseed, potato protein and brewers yeast, this looks like the profile of a kibble containing a moderate amount of meat.

Bottom line?

Kirkland Signature Nature’s Domain is a grain-free dry dog food using a moderate amount of named meat meals as its main source of animal protein, thus earning the brand 3.5 stars.

Recommended.

However, it’s unfortunate the company chose to include so much plant-based protein in its recipe. Otherwise, we would have been compelled to award this product a higher rating.

Please note certain recipes are sometimes given a higher or lower rating based upon our estimate of their total meat content and (when appropriate) their fat-to-protein ratios.

Kirkland Signature Dog Food
Recall History

The following list (if present) includes all dog food recalls since 2009 directly related to this product line. If there are no recalls listed in this section, we have not yet reported any events.

You can view a complete list of all dog food recalls sorted by date. Or view the same list sorted alphabetically by brand.

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Important FDA Alert

The FDA has announced it is investigating a potential connection between grain-free diets and a type of canine heart disease known as dilated cardiomyopathy. Click here for details.

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Notes and Updates

02/08/2019 Last Update