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20% OFF
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15% OFF
Nulo
For New Customers w/ Code: AFPAWDIET
Nulo vs. Kirkland Signature
In this comparison article for Nulo vs Kirkland Signature, we'll highlight the key differences between these two pet food brands. To properly compare Nulo 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 Nulo comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Nulo Review Page or Kirkland Signature Review Page.
Guaranteed Analysis: Kirkland Signature vs. Nulo
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.
Nulo Dog Food vs. Kirkland Signature Dog Food
| Dry Dog Food | Nulo | Kirkland Signature |
| Crude Protein | 35.7% | 27.5% |
| Crude Fat | 19.6% | 15.3% |
| Crude Fiber | 5.1% | 5.4% |
| Wet/Canned Dog Food | Nulo | Kirkland Signature |
| Crude Protein | 45.6% | 44.4% |
| Crude Fat | 31.4% | 27.8% |
| Crude Fiber | 5.5% | 5.6% |
Crude Protein Comparison For Dog Food
Protein is an extremely important part of your dog's diet. Without sufficient protein, dogs can develop a wide-range of serious health problems.
Nulo dry dog foods clearly provides more protein than Kirkland Signature. In fact, the difference between the protein content is roughly 8.24%, which is a significant amount. For wet dog foods, Nulo and Kirkland Signature provide roughly the same amount of protein.
Crude Fat Comparison For Dog Food
Dietary fats serves a multitude of roles in the proper development and function of our canine companions. Here are some of the benefits (not exhaustive):
- Help produce prostaglandins, which reduce inflammation among other critical functions.
- Aid in the absorption of fat-soluble vitamins
- Improve skin and coat health
- Improve the palatially of your dog's food
Kirkland Signature dry recipes contain 4.35% less fat than Nulo dry recipes. This difference in fat content is a notable difference between Nulo and Kirkland Signature. For wet dog foods, Nulo typically provides a little more fat (about 3.67% more).
Both brands provide roughly the same amount of crude fiber. With regards to wet dog food, Kirkland Signature and Nulo also provide roughly the same amount of crude fiber.
Nulo Cat Food vs. Kirkland Signature Cat Food
| Dry Cat Food | Nulo | Kirkland Signature |
| Crude Protein | 44.3% | 34.8% |
| Crude Fat | 20.0% | 15.9% |
| Crude Fiber | 5.0% | 5.9% |
Crude Protein Comparison For Cat Food
Protein is an extremely important part of your cat's diet. Without sufficient protein, cats can develop a wide-range of serious health problems.
On average, Nulo dry cat food recipes contain 9.52% more protein than Kirkland Signature recipes. Clearly, there is a significant difference between the protein content of Kirkland Signature and Nulo.
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):
- Aid in the digestion and absorption of fat-soluble vitamins
- Improve the health of skin/coat
- Slow the growth of yeast infections
- Slow the development and spread of certain type of cancers.
- Maintain healthy blood pressure
The table shows that Kirkland Signature provides far less fat than Nulo. The difference in fat content is roughly 4.03%.
As you can see, Nulo and Kirkland Signature guarantee a similar amount of crude fiber.
Nulo Pet Food Ingredients vs. Kirkland Signature Pet Food Ingredients
Nulo and Kirkland Signature both use the following controversial ingredients in many of their products:
Here are some of the controversial ingredients used only by Nulo.
Here are some of the controversial ingredients used only by Kirkland Signature.
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 Nulo.
Product Safety: Recall History of Nulo & Kirkland Signature?
According to our records, neither brand has issued any product recalls. Therefore, consumers have no reason to question the safety of Nulo 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 Nulo Pet Foods
You can purchase Nulo pet foods from the following stores:
Where To Buy Kirkland Signature Pet Foods
You can purchase Kirkland Signature pet food products from these retailers:
Type Of Pet Foods Available
| Product | Nulo | Kirkland Signature |
| Dry Dog Food | 29 Recipes | 12 Recipes |
| Wet Dog Food | 21 Recipes | 1 Recipes |
| Dog Treats | 8 Treats | None |
| Dry Cat Food | 15 Recipes | 3 Recipes |
| Wet Cat Food | 27 Recipes | None |
| Cat Treats | 7 Treats | None |
Top Rated Nulo Recipes
Top Rated Kirkland Signature Recipes
