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Nulo vs Under The Sun

Nulo vs. Under The Sun

In this comparison article for Nulo vs Under The Sun, we'll highlight the key differences between these two pet food brands. To properly compare Nulo and Under The Sun, 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 Under The Sun 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 Under The Sun Review Page.

Guaranteed Analysis: Under The Sun 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. Under The Sun Dog Food

Dry Dog FoodNuloUnder The Sun
Crude Protein35.7%27.5%
Crude Fat19.6%12.1%
Crude Fiber5.1%4.6%
Wet/Canned Dog FoodNuloUnder The Sun
Crude Protein45.6%41.1%
Crude Fat31.4%24.5%
Crude Fiber5.5%6.1%

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 Under The Sun. In fact, the difference between the protein content is roughly 8.28%, which is a significant amount. For wet dog foods, Nulo provides more protein (about 4.51% more).


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

Under The Sun dry recipes contain 7.57% less fat than Nulo dry recipes. This difference in fat content is a notable difference between Nulo and Under The Sun. In addition, Nulo wet dog foods also provide more fat than Under The Sun wet foods.


Both brands provide roughly the same amount of crude fiber. With regards to wet dog food, Under The Sun and Nulo also provide roughly the same amount of crude fiber.

Nulo Cat Food vs. Under The Sun Cat Food

Wet/Canned Cat FoodNuloUnder The Sun
Crude Protein53.3%46.5%
Crude Fat24.2%22.3%
Crude Fiber4.6%6.7%

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.

There is a relatively large difference between the protein content of Nulo and Under The Sun. On average, Under The Sun wet cat food recipes contain 6.80% less protein than Nulo recipes.


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

There is a relatively insignificant difference between the crude fat content of the two brands.


There is a small difference between the fiber content of Under The Sun and Nulo. We can see that Under The Sun guarantees about 2.13% more fiber than Nulo.

Nulo Pet Food Ingredients vs. Under The Sun Pet Food Ingredients

Here are some of the controversial ingredients used only by Nulo.

Powdered Cellulose
Canola Oil (Preserved With Mixed Tocopherols And Citric Acid)

Here are some of the controversial ingredients used only by Under The Sun.

Canola Oil
Pea Protein

We believe that certain pet food ingredients are linked to adverse health affects; these ingredients are classified as harmful.

Nulo and Under The Sun both use the following harmful ingredients in many of their products:

Menadione Sodium Bisulfite Complex

Here are some of the harmful ingredients used only by Under The Sun.

Menadione Sodium Bisulfate Complex

Product Safety: Recall History of Nulo & Under The Sun?

According to our records, neither brand has issued any product recalls. Therefore, consumers have no reason to question the safety of Nulo or Under The Sun pet food products.

Price Comparison: Which Brand Is More Expensive?

Dry Dog FoodNuloUnder The Sun
Per Pound$12.70$1.67
Per Calorie$0.0067$0.0011

The average cost-per-lb is heavily influenced by the varying amounts of moisture present in each brand's food products (wet vs. dry food, dry vs. freeze-dried food, etc). However, the average cost-per-kcal eliminates the influence of moisture. Therefore, the average cost-per-kcal is the better metric to consider.

If you'd like to calculate the average cost-per-day or cost-pet-year of feeding Nulo or Under The Sun, input your pet's weight into our cost analyzer widget.

Averages price data can identify whether or not there exists a significant price difference between two brands. However, the actual price that you'll pay for Nulo or Under The Sun will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Nulo and Under The Sun. In addition, we currently have some great coupons for our readers.


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:


78 Recipes In-Stock Today

34 Recipes In-Stock Today

42 Recipes In-Stock Today

23 Recipes In-Stock Today

Where To Buy Under The Sun Pet Foods

You can purchase Under The Sun pet food products from these retailers:


4 Recipes In-Stock Today

4 Recipes In-Stock Today

4 Recipes In-Stock Today

Type Of Pet Foods Available

ProductNuloUnder The Sun
Dry Dog Food29 Recipes7 Recipes
Wet Dog Food21 Recipes8 Recipes
Dog Treats8 TreatsNone
Dry Cat Food15 RecipesNone
Wet Cat Food27 Recipes9 Recipes
Cat Treats7 TreatsNone

Top Rated Nulo Recipes

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Top Rated Under The Sun Recipes

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