Royal Canin Size Health Nutrition Giant Dog Food receives the Advisor’s second-highest tier rating of 4 stars.
The Royal Canin Size Health Nutrition Giant Dog Food product line includes the 3 dry dog foods listed below.
Each recipe includes its related AAFCO nutrient profile when available on the product’s official webpage: Growth, Maintenance, All Life Stages, Supplemental or Unspecified.
Use the links to check prices and package sizes at an online retailer.
Royal Canin Size Health Nutrition Giant Junior was selected to represent the other products in the line for this review.
Royal Canin Size Health Nutrition Giant Junior
Dry Dog Food
Estimated Dry Matter Nutrient Content
Ingredients: Chicken by-product meal, brewers rice flour, brewers rice, corn, wheat gluten, chicken fat, corn gluten meal, natural flavors, dried plain beet pulp, sodium silico aluminate, monocalcium phosphate, fish oil, vegetable oil, potassium chloride, salt, psyllium seed husk, l-lysine, calcium carbonate, fructooligosaccharides, hydrolyzed yeast (source of betaglucans), Yucca schidigera extract, vitamins [dl-alpha tocopherol acetate (source of vitamin E), l-ascorbyl-2-polyphosphate (source of vitamin C), biotin, d-calcium pantothenate, vitamin A acetate, niacin supplement, pyridoxine hydrochloride (vitamin B6), thiamine mononitrate (vitamin B1), vitamin B12 supplement, riboflavin supplement, vitamin D3 supplement, folic acid], dl-methionine, choline chloride, taurine, trace minerals [zinc proteinate, zinc oxide, manganese proteinate, ferrous sulfate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], glucosamine hydrochloride, marigold extract (Tagetes erecta l.), l-carnitine, carotene, chondroitin sulfate, rosemary extract, preserved with mixed tocopherols and citric acid
Fiber (estimated dry matter content) = 3.8%
Red denotes controversial item
|Estimated Nutrient Content|
|Dry Matter Basis||32%||16%||44%|
|Calorie Weighted Basis||28%||33%||39%|
The first ingredient in this dog food is chicken by-product meal, a dry rendered product of slaughterhouse waste. It’s made from what’s left of a slaughtered chicken after all the choice cuts have been removed.
In addition to organs, this item can also include feet, beaks, undeveloped eggs and almost anything other than prime skeletal muscle.
On the brighter side, by-product meals are meat concentrates and contain nearly 300% more protein than fresh chicken.
The quality of this ingredient can vary, depending on the caliber of the raw materials obtained by the manufacturer.
The next two ingredients are brewers rice flour and brewers rice. Brewers rice is a cereal grain by-product consisting of the small fragments left over after milling whole rice. Aside from the caloric energy it contains, this item is of only modest nutritional value to a dog.
The fourth ingredient is corn. Corn is an inexpensive and controversial cereal grain. And aside from its energy content, this grain is of only modest nutritional value to a dog.
For this reason, we do not consider corn a preferred component in any dog food.
The fifth ingredient is wheat gluten. Wheat gluten is the residue remaining after wheat has had most of its starchy carbohydrate extracted from it.
And less costly plant-based products like this can notably boost the total protein reported on the label — a factor that can’t be ignored when judging the actual meat content of this dog food.
The sixth ingredient is chicken fat. This item is obtained from rendering chicken, a process similar to making soup in which the fat itself is skimmed from the surface of the liquid.
Chicken fat is high in linoleic acid, an omega-6 fatty acid essential for life. Although it doesn’t sound very appetizing, chicken fat is actually a quality ingredient.
The seventh ingredient is corn gluten meal. Gluten is the rubbery residue remaining once corn has had most of its starchy carbohydrate washed out of it.
Corn gluten meal contains 60% protein — a factor that must be considered when judging the actual meat content of this dog food.
It also has a lower biological value than meat.
After the natural flavor, we find beet pulp. Beet pulp is a controversial ingredient, a high fiber by-product of sugar beet processing.
Some denounce beet pulp as an inexpensive filler while others cite its outstanding intestinal health and blood sugar benefits.
We only call your attention here to the controversy and believe the inclusion of beet pulp in reasonable amounts in most dog foods is entirely acceptable.
From here, the list goes on to include a number of other items.
But realistically, ingredients located this far down the list (other than nutritional supplements) are not likely to affect the overall rating of this Royal Canin product.
With 4 notable exceptions…
First, vegetable oil is a generic oil of unknown origin. The ratio of omega-6 to omega-3 fats in any oil is nutritionally critical and can vary significantly (depending on the source).
Without knowing more, it’s impossible to judge the quality of an item so vaguely described. However, compared to a named animal fat, a generic vegetable oil cannot be considered a quality ingredient.
Next, this recipe contains fructooligosaccharide, an alternative sweetener1 probably used here as a prebiotic. Prebiotics function to support the growth of healthy bacteria in the large intestine.
We also note the use of taurine, an important amino acid associated with the healthy function of heart muscle. Although taurine is not typically considered essential in canines, some dogs have been shown to be deficient in this critical nutrient.
And lastly, this food includes chelated minerals, minerals that have been chemically attached to protein. This makes them easier to absorb. Chelated minerals are usually found in better dog foods.
Royal Canin Size Health Nutrition
Giant Dog Food Review
Judging by its ingredients alone, Royal Canin Size Health Nutrition Giant Dog Food looks like an average dry product.
As a group, the brand features an average protein content of 32% and a mean fat level of 16%. Together, these figures suggest a carbohydrate content of 44% for the overall product line.
And a fat-to-protein ratio of about 51%.
Which means this Royal Canin product line contains…
Above-average protein. Near-average fat. And below-average carbs when compared to other dry dog foods.
When you consider the protein-boosting effect of the wheat and corn glutens, this looks like the profile of a dry product containing a moderate amount of meat.
Royal Canin Size Health Nutrition Giant is a grain-inclusive dry dog food using a moderate amount of named by-product meal as its dominant source of animal protein, thus receiving 4 stars.
Royal Canin Dog Food
The following list (if present) includes all dog food recalls since 2009 directly related to Royal Canin. If there are no recalls listed in this section, we have not yet reported any events.
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Important FDA Alert
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Notes and Updates
04/10/2020 Last Update