Diamond vs Royal Canin

Diamond vs. Royal Canin

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

Guaranteed Analysis: Royal Canin vs. Diamond

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.

Diamond Dog Food vs. Royal Canin Dog Food

Dry Dog Food Diamond Royal Canin
Crude Protein 28.3% 26.5%
Crude Fat 17.1% 15.4%
Crude Fiber 4.7% 5.3%
Wet/Canned Dog Food Diamond Royal Canin
Crude Protein 43.9% 29.7%
Crude Fat 27.3% 16.4%
Crude Fiber 4.5% 10.2%

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 insignificant difference between the crude protein content of the two brands. For wet dog foods, Diamond provides significantly more protein (about 14.23% more).


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.

Both brands provide roughly the same amount of crude fat. For wet dog foods, Diamond provides significantly more fat (about 10.88% more).


As you can see, Diamond and Royal Canin guarantee a similar amount of crude fiber. For wet dog foods, Royal Canin provides more fiber (about 5.65% more).

Diamond Cat Food vs. Royal Canin Cat Food

Dry Cat Food Diamond Royal Canin
Crude Protein 37.8% 33.6%
Crude Fat 19.7% 14.6%
Crude Fiber 4.7% 7.3%
Wet/Canned Cat Food Diamond Royal Canin
Crude Protein 44.7% 44.9%
Crude Fat 22.0% 14.5%
Crude Fiber 6.1% 10.4%

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 relatively large difference between the protein content of Diamond and Royal Canin. On average, Royal Canin dry cat food recipes contain 4.22% less protein than Diamond recipes. For wet cat foods, Royal Canin and Diamond provide roughly the same amount of 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):

  • 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.

Royal Canin dry recipes contain 5.10% less fat than Diamond dry recipes. This difference in fat content is a notable difference between Diamond and Royal Canin. In addition, Diamond wet cat foods also provide more fat than Royal Canin wet foods.


There is a small difference between the fiber content of Royal Canin and Diamond. We can see that Royal Canin guarantees about 2.60% more fiber than Diamond. In addition, Royal Canin wet cat foods also provide more fiber than Diamond wet foods.

Diamond Pet Food Ingredients vs. Royal Canin Pet Food Ingredients

Diamond and Royal Canin both use the following controversial ingredients in many of their products:

Pea Protein
Brewers Rice
Tomato Pomace
Corn Gluten Meal
Powdered Cellulose
Chicken By-Product Meal

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

Meat Meal
Ground Corn
Beef By-Products
Ground Whole Grain Corn
Poultry By-Product Meal
Canola Oil (Preserved With Mixed Tocopherols)

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
Wheat Gluten
Vegetable Oil
Pork By-Products
Brewers Rice Flour
Chicken By-Products
Dried Tomato Pomace
Venison By-Products
Duck By-Product Meal
Soybean Protein Isolate
Hydrolyzed Poultry By-Products Aggregate

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 Diamond.

Menadione Sodium Bisulfite

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

Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Diamond & Royal Canin?

Diamond has been recalled once.

  • March 10, 2013: low level of thiamine (Vitamin B1)

Royal Canin has been recalled 3 times.

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

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Diamond Royal Canin
Per Pound $1.17 $3.54
Per Calorie $0.0007 $0.0021
Dry Cat Food Diamond Royal Canin
Per Pound $1.23 $5.05
Per Calorie $0.0007 $0.0031
Wet Dog Food Diamond Royal Canin
Per Pound $2.00 $4.51
Per Calorie $0.0035 $0.0103
Wet Cat Food Diamond Royal Canin
Per Pound $3.07 $6.79
Per Calorie $0.0058 $0.0184

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 Diamond or Royal Canin, 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 Diamond or Royal Canin will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Diamond and Royal Canin. 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 Diamond Pet Foods

You can purchase Diamond pet foods from the following stores:






Where To Buy Royal Canin Pet Foods

You can purchase Royal Canin pet food products from these retailers:










Type Of Pet Foods Available

Product Diamond Royal Canin
Dry Dog Food 21 Recipes 129 Recipes
Wet Dog Food 3 Recipes 35 Recipes
Dog Treats 6 Treats 5 Treats
Dry Cat Food 4 Recipes 54 Recipes
Wet Cat Food 3 Recipes 40 Recipes
Cat Treats 5 Treats

Compare Pet Food Prices Across Multiple Pet Stores

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