Supreme Source vs Castor & Pollux

Supreme Source vs. Castor & Pollux

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

Guaranteed Analysis: Castor & Pollux vs. Supreme Source

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.

Supreme Source Dog Food vs. Castor & Pollux Dog Food

Dry Dog Food Supreme Source Castor & Pollux
Crude Protein 28.9% 33.9%
Crude Fat 12.8% 16.9%
Crude Fiber 9.0% 4.4%

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.

Supreme Source dry recipes contain 5.00% less protein than Castor & Pollux dry recipes. This difference in protein content is a notable difference between Castor & Pollux and Supreme Source.


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

The table shows that Supreme Source provides far less fat than Castor & Pollux. The difference in fat content is roughly 4.11%.


Our analysis shows that Supreme Source guarantees 4.60% more fiber than Castor & Pollux dry dog food recipes.

Supreme Source Cat Food vs. Castor & Pollux Cat Food

Dry Cat Food Supreme Source Castor & Pollux
Crude Protein 38.9% 38.2%
Crude Fat 16.7% 15.7%
Crude Fiber 5% 4.0%

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.

Both brands provide roughly the same amount of crude protein.


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

As you can see, Castor & Pollux and Supreme Source guarantee a similar amount of crude fat.


Castor & Pollux and Supreme Source both provide roughly the same amount of crude fiber.

Supreme Source Pet Food Ingredients vs. Castor & Pollux Pet Food Ingredients

Supreme Source and Castor & Pollux both use the following controversial ingredients in many of their products:

Pea Protein
Tomato Pomace

Here are some of the controversial ingredients used only by Supreme Source.

Poultry Fat (Preserved With Mixed Tocopherols)

Here are some of the controversial ingredients used only by Castor & Pollux.

Garlic
Caramel
Garlic Powder
Powdered Cellulose
Organic Pea Protein
Organic Caramel Color
Organic Garlic Powder
Pea Protein Concentrate
Canola Oil (Preserved With Mixed Tocopherols)
Canola Oil (Preserved With Mixed Tocopherols And Citric Acid)

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 Supreme Source.

Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Supreme Source & Castor & Pollux?

According to our records, Supreme Source has never been recalled.

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 Supreme Source Castor & Pollux
Per Pound $1.68 $4.25
Per Calorie $0.0011 $0.0026
Dry Cat Food Supreme Source Castor & Pollux
Per Pound $2.70 $4.85
Per Calorie $0.0016 $0.0029

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 Supreme Source 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 Supreme Source 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 Supreme Source and Castor & Pollux. 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 Supreme Source Pet Foods

You can purchase Supreme Source 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 Supreme Source Castor & Pollux
Dry Dog Food 4 Recipes 20 Recipes
Wet Dog Food 34 Recipes
Dog Treats 4 Treats 23 Treats
Dry Cat Food 2 Recipes 6 Recipes
Wet Cat Food 16 Recipes
Cat Treats 3 Treats 1 Treats

Compare Pet Food Prices Across Multiple Pet Stores

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