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NutriSource vs. Castor & Pollux

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

Guaranteed Analysis: Castor & Pollux vs. NutriSource

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.

NutriSource Dog Food vs. Castor & Pollux Dog Food

Dry Dog Food	NutriSource	Castor & Pollux
Crude Protein	28.9%	32.6%
Crude Fat	16.8%	17.1%
Crude Fiber	7.1%	4.2%

Wet/Canned Dog Food	NutriSource	Castor & Pollux
Crude Protein	43.4%	39.9%
Crude Fat	33.0%	23.5%
Crude Fiber	7.2%	6.5%

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 small difference between the protein content of Castor & Pollux and NutriSource. We can see that Castor & Pollux guarantees about 3.72% more protein than NutriSource. In addition, NutriSource wet dog foods also provide more protein than Castor & Pollux 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, NutriSource provides significantly more fat (about 9.58% more).

According to our average data, Castor & Pollux typically provides less fiber than NutriSource. However, this difference is relatively small and doesn't represent a significant difference between the two brands. For wet dog foods, NutriSource and Castor & Pollux provide roughly the same amount of fiber.

NutriSource Cat Food vs. Castor & Pollux Cat Food

Dry Cat Food	NutriSource	Castor & Pollux
Crude Protein	36.4%	38.2%
Crude Fat	17.9%	15.7%
Crude Fiber	7.8%	4.0%

Wet/Canned Cat Food	NutriSource	Castor & Pollux
Crude Protein	46.4%	43.3%
Crude Fat	31.4%	20.4%
Crude Fiber	5.2%	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.

Both brands provide roughly the same amount of crude protein. For wet cat foods, NutriSource typically provides a little more protein (about 3.05% 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.

If you look at the average percentages of crude fat, you'll notice that NutriSource typically guarantees 2.19% more fat. This is a fairly small difference between NutriSource and Castor & Pollux, but still worth mentioning. In addition, NutriSource wet cat foods also provide more fat than Castor & Pollux wet foods.

According to our data, NutriSource guarantees 3.82% more fiber than Castor & Pollux. Although this difference is relatively small, it's still a notable difference. For wet cat foods, Castor & Pollux and NutriSource provide roughly the same amount of fiber.

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

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

Garlic

Pea Protein

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

Canola Oil

White Rice

Brewers Rice

Dried Tomato Pomace

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

Caramel

Garlic Powder

Tomato Pomace

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.

NutriSource and Castor & Pollux both use the following harmful ingredients in many of their products:

Menadione Sodium Bisulfite Complex

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

According to our records, NutriSource 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	NutriSource	Castor & Pollux
Per Pound	$2.64	$5.01
Per Calorie	$0.0015	$0.0030

Dry Cat Food	NutriSource	Castor & Pollux
Per Pound	$3.25	$5.50
Per Calorie	$0.0018	$0.0033

Wet Dog Food	NutriSource	Castor & Pollux
Per Pound	$3.21	$8.32
Per Calorie	$0.0061	$0.0182

Wet Cat Food	NutriSource	Castor & Pollux
Per Pound	$6.39	$9.65
Per Calorie	$0.0119	$0.0214

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 NutriSource 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 NutriSource 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 NutriSource 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 NutriSource Pet Foods

You can purchase NutriSource pet foods from the following stores:

75 Recipes In-Stock Today

30 Recipes In-Stock Today

Where To Buy Castor & Pollux Pet Foods

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

46 Recipes In-Stock Today

10 Recipes In-Stock Today

35 Recipes In-Stock Today

Type Of Pet Foods Available

Product	NutriSource	Castor & Pollux
Dry Dog Food	41 Recipes	17 Recipes
Wet Dog Food	13 Recipes	28 Recipes
Dog Treats	11 Treats	22 Treats
Dry Cat Food	8 Recipes	6 Recipes
Wet Cat Food	10 Recipes	18 Recipes
Cat Treats	None	1 Treats