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Blue Buffalo vs Castor & Pollux

Blue Buffalo vs. Castor & Pollux

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

Guaranteed Analysis: Castor & Pollux vs. Blue Buffalo

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.

Blue Buffalo Dog Food vs. Castor & Pollux Dog Food

Dry Dog Food Blue Buffalo Castor & Pollux
Crude Protein 29.5% 33.1%
Crude Fat 15.3% 16.9%
Crude Fiber 6.8% 4.1%
Wet/Canned Dog Food Blue Buffalo Castor & Pollux
Crude Protein 40.0% 39.9%
Crude Fat 26.2% 23.5%
Crude Fiber 7.4% 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.

According to our data, Castor & Pollux guarantees 3.56% more protein than Blue Buffalo. Although this difference is relatively small, it's still a notable difference. For wet dog foods, Blue Buffalo and Castor & Pollux provide roughly the same amount of protein.


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.

Blue Buffalo and Castor & Pollux both provide roughly the same amount of crude fat. For wet dog foods, Blue Buffalo typically provides a little more fat (about 2.74% more).


There is a small difference between the fiber content of Blue Buffalo and Castor & Pollux. We can see that Blue Buffalo guarantees about 2.69% more fiber than Castor & Pollux. For wet dog foods, Blue Buffalo and Castor & Pollux provide roughly the same amount of fiber.

Blue Buffalo Cat Food vs. Castor & Pollux Cat Food

Dry Cat Food Blue Buffalo Castor & Pollux
Crude Protein 37.5% 38.2%
Crude Fat 16.8% 15.7%
Crude Fiber 6.2% 4.0%
Wet/Canned Cat Food Blue Buffalo Castor & Pollux
Crude Protein 45.6% 43.3%
Crude Fat 24.8% 20.4%
Crude Fiber 7.9% 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.

There is a relatively insignificant difference between the crude protein content of the two brands. For wet cat foods, Blue Buffalo typically provides a little more protein (about 2.26% more).


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.

Both brands provide roughly the same amount of crude fat. For wet cat foods, Blue Buffalo provides more fat (about 4.44% more).


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

Blue Buffalo Pet Food Ingredients vs. Castor & Pollux Pet Food Ingredients

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

Garlic
Caramel
Pea Protein
Tomato Pomace
Powdered Cellulose

Here are some of the controversial ingredients used only by Blue Buffalo.

Canola Oil
Caramel Color
Dried Tomato Pomace

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

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 Blue Buffalo.

Menadione Sodium Bisulfate Complex

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

Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Blue Buffalo & Castor & Pollux?

Blue Buffalo has been recalled 9 times.

  • Nov. 25, 2015: Salmonella
  • Nov. 6, 2015: Presence of Propylene Glycol
  • May 31, 2016: Mold
  • March 18, 2017: elevated beef throid hormone
  • Feb. 14, 2017: presence of aluminum
  • March 3, 2017: Foil Seal Packaging Problem
  • Oct. 8, 2010: toxic levels of vitamin D
  • April 19, 2007: Melamine
  • April 26, 2007: Melamine

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 Blue Buffalo Castor & Pollux
Per Pound $2.63 $4.96
Per Calorie $0.0016 $0.0030
Dry Cat Food Blue Buffalo Castor & Pollux
Per Pound $3.67 $4.92
Per Calorie $0.0022 $0.0030
Wet Dog Food Blue Buffalo Castor & Pollux
Per Pound $3.78 $5.78
Per Calorie $0.0075 $0.0122
Wet Cat Food Blue Buffalo Castor & Pollux
Per Pound $5.62 $8.07
Per Calorie $0.0115 $0.0170

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 Blue Buffalo 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 Blue Buffalo 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 Blue Buffalo 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 Blue Buffalo Pet Foods

You can purchase Blue Buffalo pet foods from the following stores:


286 Recipes In-Stock Today

172 Recipes In-Stock Today

231 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:


58 Recipes In-Stock Today

25 Recipes In-Stock Today

51 Recipes In-Stock Today

Type Of Pet Foods Available

Product Blue Buffalo Castor & Pollux
Dry Dog Food 92 Recipes 14 Recipes
Wet Dog Food 94 Recipes 28 Recipes
Dog Treats 42 Treats 22 Treats
Dry Cat Food 41 Recipes 6 Recipes
Wet Cat Food 50 Recipes 18 Recipes
Cat Treats 16 Treats 1 Treats

Compare Pet Food Prices Across Multiple Pet Stores