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Primal vs Under The Sun

Primal vs. Under The Sun

In this comparison article for Primal vs Under The Sun, we'll highlight the key differences between these two pet food brands. To properly compare Primal 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 Primal comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Primal Review Page or Under The Sun Review Page.

Guaranteed Analysis: Under The Sun vs. Primal

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.

Primal Dog Food vs. Under The Sun Dog Food

Dry Dog Food Primal Under The Sun
Crude Protein 48.0% 27.5%
Crude Fat 26.7% 12.1%
Crude Fiber 4.6% 4.6%
Wet/Canned Dog Food Primal Under The Sun
Crude Protein 49.5% 41.1%
Crude Fat 28.4% 24.5%
Crude Fiber 5.3% 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.

When you look at the average percentages of crude protein for dry dog food, it's clear that Primal provides significantly more protein. On average, Primal guarantees about 20.52% more protein than Under The Sun. Similarly, Primal wet dog foods provide significantly more protein than Under The Sun wet foods.


Crude Fat Comparison For Dog Food

Fats are an absolutely vital component of a balanced canine diet. Not only do fats provide energy, but they also serve important roles in the normal development and function of your dog's body. For example, fats help dogs produce prostaglandins, which reduce inflammation among many other significant functions.

The comparison table above shows that Primal dry dog foods provide significantly more fat than Under The Sun. More specifically, Primal guarantees at least 14.65% more fat. For wet dog foods, Primal typically provides a little more fat (about 3.94% more).


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

Primal Cat Food vs. Under The Sun Cat Food

Wet/Canned Cat Food Primal Under The Sun
Crude Protein 54.6% 46.5%
Crude Fat 25.4% 22.3%
Crude Fiber 4.1% 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.

On average, Primal wet cat food recipes contain 8.07% more protein than Under The Sun recipes. Clearly, there is a significant difference between the protein content of Under The Sun and Primal.


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):

  • Fats help with the digestion and absorption of fat-soluble vitamins
  • Reduce inflammation associated with arthritis
  • Slow the growth of yeast infections
  • Prevent or reduce the likelihood of certain heart problems.
  • Aid in the development of the retina and visual cortex.

If you look at the average percentages of crude fat, you'll notice that Primal typically guarantees 3.04% more fat. This is a fairly small difference between Primal and Under The Sun, but still worth mentioning.


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

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.

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

Menadione Sodium Bisulfate Complex
Menadione Sodium Bisulfite Complex

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

Primal has been recalled 2 times.

  • March 13, 2015: low thiamine level
  • Dec. 22, 2017: incorrect bone grind size

According to our records, Under The Sun has never been recalled.

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Primal Under The Sun
Per Pound $42.05 $1.73
Per Calorie $0.0209 $0.0012

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 Primal 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 Primal 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 Primal 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 Primal Pet Foods

You can purchase Primal pet foods from the following stores:


25 Recipes In-Stock Today

23 Recipes In-Stock Today

23 Recipes In-Stock Today

22 Recipes In-Stock Today

Where To Buy Under The Sun Pet Foods

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


8 Recipes In-Stock Today

8 Recipes In-Stock Today

10 Recipes In-Stock Today

Type Of Pet Foods Available

Product Primal Under The Sun
Dry Dog Food 7 Recipes
Wet Dog Food 8 Recipes
Dog Treats 7 Treats
Dry Cat Food
Wet Cat Food 9 Recipes
Cat Treats

Compare Pet Food Prices Across Multiple Pet Stores