Size Health Nutrition Large Adult Dry Dog Food, 30-lb bag
Graded by The Sniff System
Royal Canin Size Health Nutrition Large Adult Dry Dog Food is a dry formula for adult dogs, with chicken by-product meal as its primary protein.
This food includes quality carbohydrate sources that provide fermentable fiber, which is good for gut health. It also features quality fat sources like named chicken fat and fish oil, which provides beneficial EPA and DHA. The formula has AAFCO feeding trial substantiation for adult maintenance, which is a strong indicator of nutritional adequacy.
The main thing to watch for is the protein quality. Chicken by-product meal, while a protein source, delivers limited bioavailable amino acids compared to whole muscle meat.
Good fit for adult large breed dogs. Less ideal if you prioritize high-quality, highly bioavailable protein sources.
Summary written by The Sniff System from the data above. Same rubric, same drivers, expressed in English.
Strong fit for adult Labrador Retrievers navigating hip and joint concerns. Working in its favor: glucosamine/chondroitin listed. No glucosamine or chondroitin on the label, with fish oil at position 9 for anti-inflammatory EPA/DHA. Elbow dysplasia affects 10.1% of Labrador Retrievers evaluated by the Orthopedic Foundation for Animals, from a sample size of 103,130 dogs submitted through 2023 (OFA) .
Looking at this for adult Labrador Retrievers or Labrador Retrievers with hip and joint concerns ? We are building dedicated pages for these combinations.
Auto-matched from this product's measurements (ingredients, life stage, calorie density) to a breed archetype. Not a substitute for vet input on your specific dog.
Research informing this analysis
MethodologyThe Sniff System grades this product against 5 cited studies relevant to its profile. Each link opens the original source.
- OFAorthopedics · breed predisposition· cited in 4 claims
- APOP, 2023weight management
- Bhathal et al., 2017glucosamine
- Brooks et al., 2014weight management
- OFAorthopedics
Every claim on Sniff traces to a source. If you find a citation that's wrong, outdated, or misapplied, tell us.
Solid grade. 66/100 (B) reflects the structural fit of this formula against The Sniff System's eight scoring components. Carbohydrate quality did the heavy lifting (+16 points): Quality carbohydrate sources with fermentable fiber. What we'd flag for vet discussion: protein quality (-16.5 points). Low protein quality. chicken by-product meal delivers limited bioavailable amino acids. A-tier is 9 points up. Protein quality is where to find them.
Quality carbohydrate sources with fermentable fiber.
Quality fat sources: named fat with marine oil (EPA and DHA source).
AAFCO feeding trial substantiation for adult maintenance.
Low protein quality. chicken by-product meal delivers limited bioavailable amino acids.
- Bottom 10% for crude fiber in Royal Canin's lineup (3.6% DMB)
- Top quartile for caloric density in Royal Canin's lineup (360 kcal/cup)
- Bottom 10% for fat quality in Royal Canin's lineup (12/16)
Computed against the rest of our catalog. Percentiles refresh on each catalog update.
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$3.00/lb vs your seed's $3.33/lb (10% less) at a comparable score.
Surfaced from a vector similarity search across 3,491 scored dog foods. How this works.
Read why each ingredient is good or bad for dogs.
- 1protein animalchicken by-product meal
Ground organs, bone, and tissue. Nutritionally dense, especially the liver and gizzard fractions. Named species ('chicken') is what matters. Generic 'poultry by-product meal' is the one to worry about. See why →
Position 1: primary protein source. After cooking removes water, this may drop in proportional weight, but it anchors the recipe.
- 2brewers rice
Broken rice kernels left over from milling, usually destined for human beer-making. Cheaper than whole or even white rice. Same carbs, less nutrition than the brown version. See why →
Position 2: major carbohydrate source.
- 3grainwheat
Whole wheat. Fine for most dogs, though a portion are sensitive. Not a quality concern, just a fit-for-your-dog question.
Position 3: major carbohydrate source.
- 4grainbrown rice
Whole grain that's easy to digest. Steady carb energy plus a little fiber.
Position 4: supporting grain. Smaller contribution to the carb deck.
- 5fatchicken fat
Despite the name, a high-quality energy source. Concentrated calories plus essential fatty acids like linoleic acid. See why →
Position 5: secondary fat. Often where marine oils sit when present alongside a primary land-animal fat.
- 6corn protein meal
Concentrated corn protein. Similar in role to corn gluten meal, pads the protein number on the label without matching meat amino acids.
Position 6: supporting grain. Smaller contribution to the carb deck.
- 7othernatural flavors
Same as natural flavor. Usually hydrolyzed liver or broth, adds palatability.
- 8dried plain beet pulp
Beet fiber, with the sugar removed. Long unfairly maligned. It's a real soluble fiber that supports stool quality. See why →
Position 8: functional fiber for digestion or satiety.
- 9fatfish oil
Concentrated omega-3s. The reason 'EPA' and 'DHA' get to show up on the bag.
Position 9. Moderate marine-oil inclusion. Supplements EPA/DHA without being the primary fat.
- 10mineralcalcium carbonate
Source of calcium. Functional. Required in complete dog foods, especially those without bone-in meat meals.
- 11mineralpotassium chloride
Required mineral. Sometimes used as a salt substitute. Standard inclusion in complete diets.
- 12mineralsalt
Sodium chloride. Required at small doses for normal physiology. Not a quality concern in standard amounts.
- 13monocalcium phosphate
Source of calcium and phosphorus. Standard mineral inclusion in complete dog foods.
- 14sodium aluminosilicate
Anti-caking agent that keeps powder ingredients flowing. Functional, not nutritional.
- 15supplementcholine chloride
Essential nutrient for liver and brain function. Standard inclusion in complete dog foods.
- 16preservative naturalrosemary extract
Natural preservative. Replaces synthetic ones like BHA and BHT.
- 17preserved with mixed tocopherols and citric acid
- 18mineralzinc proteinate
Zinc bound to protein for better absorption. The premium form of the mineral, versus zinc oxide which sits cheaper on the label.
- 19zinc oxide
Inorganic zinc. Cheapest mineral form on the market. Functional but less bioavailable than chelated alternatives.
- 20mineralmanganese proteinate
Manganese bound to protein for better absorption. The chelated form most premium brands use.
- 21mineralferrous sulfate
Inorganic iron. Standard mineral source. Iron proteinate is the gentler, better-absorbed premium form.
- 22manganous oxide
Inorganic manganese. Functional, cheaper than chelated forms, less efficiently absorbed.
- 23mineralcopper sulfate
Inorganic copper. Standard, effective at small doses. Premium formulas tend to use copper proteinate instead.
- 24mineralsodium selenite Flagged
Inorganic selenium. Effective at AAFCO levels, no documented safety concern in dogs despite what some pet food blogs claim. Selenium yeast is a marginal upgrade, not a necessity. See why →
- 25mineralcalcium iodate
Source of iodine for thyroid function. Functional, required in complete formulas.
Showing first 25 of 30. Position 1-5 has the largest weight in the recipe.
24 of 25 ingredients have a curated note. Coverage grows over time.