vs
Hill's Science Diet vs Royal Canin

Hill's Science Diet vs. Royal Canin

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

Guaranteed Analysis: Royal Canin vs. Hill's Science Diet

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.

Hill's Science Diet Dog Food vs. Royal Canin Dog Food

Dry Dog FoodHill's Science DietRoyal Canin
Crude Protein24.6%27.8%
Crude Fat14.7%16.2%
Crude Fiber3.7%4.7%
Wet/Canned Dog FoodHill's Science DietRoyal Canin
Crude Protein25.7%36.8%
Crude Fat17.3%20.0%
Crude Fiber3.5%11.7%

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, Royal Canin guarantees 3.27% more protein than Hill's Science Diet. Although this difference is relatively small, it's still a notable difference. In addition, Royal Canin wet dog foods also provide more protein than Hill's Science Diet 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.

Hill's Science Diet and Royal Canin both provide roughly the same amount of crude fat. For wet dog foods, Royal Canin typically provides a little more fat (about 2.72% more).


There is a relatively insignificant difference between the crude fiber content of the two brands. For wet dog foods, Royal Canin provides significantly more fiber (about 8.18% more).

Hill's Science Diet Cat Food vs. Royal Canin Cat Food

Dry Cat FoodHill's Science DietRoyal Canin
Crude Protein35.0%34.5%
Crude Fat18.5%15.7%
Crude Fiber4.5%6.9%
Wet/Canned Cat FoodHill's Science DietRoyal Canin
Crude Protein38.7%50.4%
Crude Fat21.5%12.8%
Crude Fiber3.6%10.5%

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.

Both brands provide roughly the same amount of crude protein. For wet cat foods, Royal Canin provides significantly more protein (about 11.70% 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.

There is a small difference between the fat content of Hill's Science Diet and Royal Canin. We can see that Hill's Science Diet guarantees about 2.80% more fat than Royal Canin. In addition, Hill's Science Diet wet cat foods also provide more fat than Royal Canin wet foods.


According to our average data, Hill's Science Diet 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 Hill's Science Diet wet foods.

Hill's Science Diet Pet Food Ingredients vs. Royal Canin Pet Food Ingredients

Hill's Science Diet and Royal Canin both use the following controversial ingredients in many of their products:

Caramel
Corn Flour
Pea Protein
Pork Plasma
Brewers Rice
Wheat Gluten
Tomato Pomace
Corn Gluten Meal
Pork By-Products
Powdered Cellulose
Dried Tomato Pomace
Soybean Protein Isolate

Here are some of the controversial ingredients used only by Hill's Science Diet.

Liver
Iron Oxide
Poultry Fat
Animal Liver
Caramel Color
Beef By-Products
Whole Grain Corn
Whole Grain Wheat
Pea Protein Concentrate

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

Corn
Wheat
Corn Meal
Corn Grits
Corn Syrup
Rice Hulls
Beef Plasma
Canola Meal
Vegetable Oil
Propyl Gallate
Brewers Rice Flour
Chicken By-Products
Venison By-Products
Duck By-Product Meal
Chicken By-Product Meal
Hydrolyzed Poultry By-Products Aggregate

We believe that certain pet food ingredients are linked to adverse health affects; these ingredients are classified as harmful.

Hill's Science Diet and Royal Canin both use the following harmful ingredients in many of their products:

Menadione Sodium Bisulfite Complex

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

Bha

Product Safety: Recall History of Hill's Science Diet & Royal Canin?

Hill's Science Diet has been recalled 2 times.

  • Jan. 31, 2019: elevated levels of Vitamin D
  • March 20, 2019: elevated levels of Vitamin D

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 FoodHill's Science DietRoyal Canin
Per Pound$2.83$7.31
Per Calorie$0.0018$0.0043
Dry Cat FoodHill's Science DietRoyal Canin
Per Pound$4.17$9.93
Per Calorie$0.0024$0.0059
Wet Dog FoodHill's Science DietRoyal Canin
Per Pound$5.03$6.33
Per Calorie$0.0125$0.0144
Wet Cat FoodHill's Science DietRoyal Canin
Per Pound$9.11$12.71
Per Calorie$0.0197$0.0354

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 Hill's Science Diet 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 Hill's Science Diet 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 Hill's Science Diet 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 Hill's Science Diet Pet Foods

You can purchase Hill's Science Diet pet foods from the following stores:


123 Recipes In-Stock Today

123 Recipes In-Stock Today

104 Recipes In-Stock Today

Where To Buy Royal Canin Pet Foods

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


79 Recipes In-Stock Today

46 Recipes In-Stock Today

83 Recipes In-Stock Today

Type Of Pet Foods Available

ProductHill's Science DietRoyal Canin
Dry Dog Food48 Recipes89 Recipes
Wet Dog Food34 Recipes50 Recipes
Dog Treats18 Treats2 Treats
Dry Cat Food25 Recipes31 Recipes
Wet Cat Food48 Recipes31 Recipes
Cat TreatsNone1 Treats

Compare Pet Food Prices Across Multiple Pet Stores