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Royal Canin vs Castor & Pollux

Royal Canin vs. Castor & Pollux

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

Guaranteed Analysis: Castor & Pollux vs. Royal Canin

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.

Royal Canin Dog Food vs. Castor & Pollux Dog Food

Dry Dog Food Royal Canin Castor & Pollux
Crude Protein 28.0% 33.8%
Crude Fat 16.3% 16.8%
Crude Fiber 4.6% 4.4%
Wet/Canned Dog Food Royal Canin Castor & Pollux
Crude Protein 36.5% 40.8%
Crude Fat 20.0% 23.0%
Crude Fiber 11.9% 6.6%

Crude Protein Comparison For Dog Food

Dogs require twenty-two amino acids to sustain life. Twelve of these amino acids are synthesized naturally, the remaining ten are consumed. Protein is the nutrient which provides some or all of these ten essential amino acids.

There is a relatively large difference between the protein content of Castor & Pollux and Royal Canin. On average, Royal Canin dry dog food recipes contain 5.77% less protein than Castor & Pollux recipes. In addition, Castor & Pollux wet dog foods also provide more protein than Royal Canin 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.

There is a relatively insignificant difference between the crude fat content of the two brands. For wet dog foods, Castor & Pollux typically provides a little more fat (about 3.01% more).


Both brands provide roughly the same amount of crude fiber. For wet dog foods, Royal Canin provides more fiber (about 5.22% more).

Royal Canin Cat Food vs. Castor & Pollux Cat Food

Dry Cat Food Royal Canin Castor & Pollux
Crude Protein 34.6% 38.2%
Crude Fat 16.0% 15.7%
Crude Fiber 6.7% 4.0%
Wet/Canned Cat Food Royal Canin Castor & Pollux
Crude Protein 51.0% 43.3%
Crude Fat 12.7% 20.4%
Crude Fiber 10.6% 5.7%

Crude Protein Comparison For Cat Food

Cats require twenty-two amino acids to sustain life. Eleven of these amino acids are synthesized naturally, the remaining eleven are consumed. Protein is the nutrient which provides some or all of these eleven essential amino acids.

There is a small difference between the protein content of Castor & Pollux and Royal Canin. We can see that Castor & Pollux guarantees about 3.63% more protein than Royal Canin. In addition, Royal Canin wet cat foods also provide 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):

  • 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.

As you can see, Castor & Pollux and Royal Canin guarantee a similar amount of crude fat. For wet cat foods, Castor & Pollux provides more fat (about 7.69% more).


According to our average data, Castor & Pollux typically provides less fiber than Royal Canin. However, this difference is relatively small and doesn't represent a significant difference between the two brands. In addition, Royal Canin wet cat foods also provide more fiber than Castor & Pollux wet foods.

Royal Canin Pet Food Ingredients vs. Castor & Pollux Pet Food Ingredients

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

Caramel
Pea Protein
Tomato Pomace
Powdered Cellulose

Here are some of the controversial ingredients used only by Royal Canin.

Corn
Wheat
Corn Meal
Corn Flour
Corn Grits
Rice Hulls
Beef Plasma
Canola Meal
Pork Plasma
Brewers Rice
Wheat Gluten
Vegetable Oil
Propyl Gallate
Corn Gluten Meal
Pork By-Products
Brewers Rice Flour
Chicken By-Products
Dried Tomato Pomace
Venison By-Products
Duck By-Product Meal
Chicken By-Product Meal
Soybean Protein Isolate
Hydrolyzed Poultry By-Products Aggregate

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

Garlic
Garlic Powder
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 Royal Canin.

Bha
Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Royal Canin & Castor & Pollux?

Royal Canin has been recalled 3 times.

  • May 11, 2007: Melamine
  • April 19, 2007: Melamine
  • Feb. 2, 2006: excess level of vitamin D3

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 Royal Canin Castor & Pollux
Per Pound $3.62 $4.23
Per Calorie $0.0021 $0.0025
Dry Cat Food Royal Canin Castor & Pollux
Per Pound $4.86 $4.80
Per Calorie $0.0029 $0.0029
Wet Dog Food Royal Canin Castor & Pollux
Per Pound $6.50 $5.64
Per Calorie $0.0157 $0.0119
Wet Cat Food Royal Canin Castor & Pollux
Per Pound $7.15 $7.47
Per Calorie $0.0202 $0.0157

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 Royal Canin 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 Royal Canin 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 Royal Canin 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 Royal Canin Pet Foods

You can purchase Royal Canin pet foods from the following stores:


175 Recipes In-Stock Today

133 Recipes In-Stock Today

113 Recipes In-Stock Today

17 Recipes In-Stock Today

Where To Buy Castor & Pollux Pet Foods

You can purchase Castor & Pollux pet food products from these retailers:


90 Recipes In-Stock Today

54 Recipes In-Stock Today

48 Recipes In-Stock Today

3 Recipes In-Stock

Type Of Pet Foods Available

Product Royal Canin Castor & Pollux
Dry Dog Food 85 Recipes 21 Recipes
Wet Dog Food 44 Recipes 34 Recipes
Dog Treats 23 Treats
Dry Cat Food 27 Recipes 6 Recipes
Wet Cat Food 23 Recipes 18 Recipes
Cat Treats 1 Treats

Compare Pet Food Prices Across Multiple Pet Stores