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Primal &
Castor & Pollux
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For New Customers w/ Code: AFPAWDIET
Primal vs. Castor & Pollux
In this comparison article for Primal vs Castor & Pollux, we'll highlight the key differences between these two pet food brands. To properly compare Primal and Castor & Pollux, 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 Castor & Pollux 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 Castor & Pollux Review Page.
Guaranteed Analysis: Castor & Pollux 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. Castor & Pollux Dog Food
| Dry Dog Food | Primal | Castor & Pollux |
| Crude Protein | 48.0% | 32.6% |
| Crude Fat | 26.7% | 17.1% |
| Crude Fiber | 4.6% | 4.2% |
| Wet/Canned Dog Food | Primal | Castor & Pollux |
| Crude Protein | 49.5% | 39.9% |
| Crude Fat | 28.4% | 23.5% |
| Crude Fiber | 5.3% | 6.5% |
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.
Primal dry dog foods clearly provides more protein than Castor & Pollux. In fact, the difference between the protein content is roughly 15.40%, which is a significant amount. Similarly, Primal wet dog foods provide significantly more protein than Castor & Pollux wet foods.
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
On average, Primal dry dog food recipes contain 9.59% more fat than Castor & Pollux recipes. Clearly, there is a significant difference between the fat content of Castor & Pollux and Primal. For wet dog foods, Primal provides more fat (about 4.94% more).
Both brands provide roughly the same amount of crude fiber. With regards to wet dog food, Castor & Pollux and Primal also provide roughly the same amount of crude fiber.
Primal Cat Food vs. Castor & Pollux Cat Food
| Dry Cat Food | Primal | Castor & Pollux |
| Crude Protein | 50.1% | 38.2% |
| Crude Fat | 24.0% | 15.7% |
| Crude Fiber | 4.8% | 4.0% |
| Wet/Canned Cat Food | Primal | Castor & Pollux |
| Crude Protein | 54.6% | 43.3% |
| Crude Fat | 25.4% | 20.4% |
| Crude Fiber | 4.1% | 5.7% |
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.
When you look at the average percentages of crude protein for dry cat food, it's clear that Primal provides significantly more protein. On average, Primal guarantees about 11.94% more protein than Castor & Pollux. Similarly, Primal wet cat foods provide significantly more protein than Castor & Pollux wet foods.
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 comparison table above shows that Primal dry cat foods provide significantly more fat than Castor & Pollux. More specifically, Primal guarantees at least 8.30% more fat. For wet cat foods, Primal provides more fat (about 4.98% more).
As you can see, Castor & Pollux and Primal guarantee a similar amount of crude fiber. With regards to wet cat food, Castor & Pollux and Primal also provide roughly the same amount of crude fiber.
Primal Pet Food Ingredients vs. Castor & Pollux Pet Food Ingredients
Here are some of the controversial ingredients used only by Castor & Pollux.
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 Castor & Pollux.
Product Safety: Recall History of Primal & Castor & Pollux?
Primal has been recalled 2 times.
- March 13, 2015: low thiamine level
- Dec. 22, 2017: incorrect bone grind size
Castor & Pollux has been recalled once.
- May 23, 2018: elevated levels of beef thyroid hormone
Price Comparison: Which Brand Is More Expensive?
| Dry Dog Food | Primal | Castor & Pollux |
| Per Pound | $45.57 | $5.01 |
| Per Calorie | $0.0227 | $0.0030 |
| Dry Cat Food | Primal | Castor & Pollux |
| Per Pound | $45.93 | $5.50 |
| Per Calorie | $0.0230 | $0.0033 |
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 Castor & Pollux, 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 Castor & Pollux 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 Castor & Pollux. In addition, we currently have some great coupons for our readers.
- 20% Off First Auto-Ship @ PetFlow (Use Code PAWDIET20)
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- 15% Off The Entire Site @ OnlyNaturalPet (Use Code AFPAWDIET)
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:
Where To Buy Castor & Pollux Pet Foods
You can purchase Castor & Pollux pet food products from these retailers:
Type Of Pet Foods Available
| Product | Primal | Castor & Pollux |
| Dry Dog Food | None | 17 Recipes |
| Wet Dog Food | None | 28 Recipes |
| Dog Treats | 6 Treats | 22 Treats |
| Dry Cat Food | None | 6 Recipes |
| Wet Cat Food | None | 18 Recipes |
| Cat Treats | None | 1 Treats |
Top Rated Primal Recipes
Top Rated Castor & Pollux Recipes
