vs
Authority vs Castor & Pollux

Authority vs. Castor & Pollux

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

Guaranteed Analysis: Castor & Pollux vs. Authority

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.

Authority Dog Food vs. Castor & Pollux Dog Food

Dry Dog Food Authority Castor & Pollux
Crude Protein 28.9% 33.8%
Crude Fat 14.5% 16.8%
Crude Fiber 4.8% 4.4%
Wet/Canned Dog Food Authority Castor & Pollux
Crude Protein 41.4% 40.8%
Crude Fat 22.8% 23.0%
Crude Fiber 8.3% 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.

The table shows that Authority provides far less protein than Castor & Pollux. The difference in protein content is roughly 4.89%. For wet dog foods, Authority and Castor & Pollux provide roughly the same amount of protein.


Crude Fat Comparison For Dog Food

Like protein, fats are an essential part of a dog's body. Fats are needed for the proper development and function of the canine body.

If you look at the average percentages of crude fat, you'll notice that Castor & Pollux typically guarantees 2.31% more fat. This is a fairly small difference between Castor & Pollux and Authority, but still worth mentioning. For wet dog foods, Castor & Pollux and Authority provide roughly the same amount of fat.


As you can see, Castor & Pollux and Authority guarantee a similar amount of crude fiber. With regards to wet dog food, Authority and Castor & Pollux also provide roughly the same amount of crude fiber.

Authority Cat Food vs. Castor & Pollux Cat Food

Dry Cat Food Authority Castor & Pollux
Crude Protein 36.9% 38.2%
Crude Fat 15.4% 15.7%
Crude Fiber 6.0% 4.0%
Wet/Canned Cat Food Authority Castor & Pollux
Crude Protein 43.8% 43.3%
Crude Fat 23.6% 20.4%
Crude Fiber 9.2% 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.

Authority and Castor & Pollux both provide roughly the same amount of crude protein. With regards to wet cat food, Authority and Castor & Pollux also 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):

  • Help transport nutrients across cell membranes
  • Fats produce metabolites, which help control inflammation
  • Maintain healthy blood pressure
  • Slow the growth of yeast infections
  • Fats improve the taste/texture of food.

There is a relatively insignificant difference between the crude fat content of the two brands. For wet cat foods, Authority typically provides a little more fat (about 3.21% more).


According to our data, Authority guarantees 2.02% more fiber than Castor & Pollux. Although this difference is relatively small, it's still a notable difference. In addition, Authority wet cat foods also provide more fiber than Castor & Pollux wet foods.

Authority Pet Food Ingredients vs. Castor & Pollux Pet Food Ingredients

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

Caramel
Pea Protein
Garlic Powder
Powdered Cellulose
Canola Oil (Preserved With Mixed Tocopherols)

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

Corn
Wheat
Beet Pulp
Canola Oil
Corn Syrup
Ground Corn
Animal Liver
Brewers Rice
Ground Wheat
Poultry Meal
Wheat Gluten
Caramel Color
Vegetable Oil
Corn Gluten Meal
Refined Corn Syrup
Dried Garlic Powder
Dried Tomato Pomace
Soybean Protein Concentrate

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

Garlic
Tomato Pomace
Organic Pea Protein
Organic Caramel Color
Organic Garlic Powder
Pea Protein Concentrate
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 Authority.

Corn Oil
Propylene Glycol
Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Authority & Castor & Pollux?

According to our records, Authority 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 Authority Castor & Pollux
Per Pound $1.51 $4.23
Per Calorie $0.0011 $0.0025
Dry Cat Food Authority Castor & Pollux
Per Pound $2.21 $4.80
Per Calorie $0.0013 $0.0029
Wet Dog Food Authority Castor & Pollux
Per Pound $1.66 $5.64
Per Calorie $0.0034 $0.0119
Wet Cat Food Authority Castor & Pollux
Per Pound $2.59 $7.47
Per Calorie $0.0052 $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 Authority 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 Authority 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 Authority 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 Authority Pet Foods

You can purchase Authority pet foods from the following stores:


50 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

53 Recipes In-Stock Today

48 Recipes In-Stock Today

3 Recipes In-Stock

Type Of Pet Foods Available

Product Authority Castor & Pollux
Dry Dog Food 33 Recipes 21 Recipes
Wet Dog Food 19 Recipes 34 Recipes
Dog Treats 6 Treats 23 Treats
Dry Cat Food 18 Recipes 6 Recipes
Wet Cat Food 16 Recipes 18 Recipes
Cat Treats 1 Treats

Compare Pet Food Prices Across Multiple Pet Stores