Size Health Nutrition Large Adult 5+ Dry Dog Food, 30-lb bag
Graded by The Sniff System
Royal Canin Size Health Nutrition Large Adult 5+ Dry Dog Food is a dry formula for adult maintenance, primarily featuring chicken by-product meal.
This formula includes quality carbohydrate sources that provide fermentable fiber, which is good for gut health. It also uses quality fat sources like named chicken fat and fish oil, which provides beneficial EPA and DHA. You'll also find premium micronutrient forms, such as chelated minerals, in the ingredient list.
Nothing concerning in the deck.
Good fit for large adult dogs aged 5 and up. Nothing serious working against it.
Summary written by The Sniff System from the data above. Same rubric, same drivers, expressed in English.
The landmark 14-year Purina Lifespan Study on 48 Labrador Retrievers demonstrated that dogs fed 25% fewer calories lived a median of 1.8 years longer and delayed the onset of chronic diseases. Strong fit for active large sporting breeds like Labrador Retrievers, Golden Retrievers, and English Setters navigating weight management. At 337 kcal/cup this formula runs on the lean side. The 2014 AAHA Weight Management Guidelines define overweight as a Body Condition Score (BCS) of 6-7 on a 9-point scale. A score of 8 or 9 indicates obesity, representing 20-30% and >30% above ideal body weight, respectively (Brooks et al., 2014) .
Looking at this for adult Labrador Retrievers or Labrador Retrievers with weight management ? 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 3 cited studies relevant to its profile. Each link opens the original source.
- Brooks et al., 2014diagnostic · protocol · satiety· cited in 5 claims
- APOP, 2023prevalence
- Raffan et al., 2016genetics
Every claim on Sniff traces to a source. If you find a citation that's wrong, outdated, or misapplied, tell us.
At 67/100, this formula lands in solid B territory. The lift comes from carbohydrate quality, worth 16 points to the final number: Quality carbohydrate sources with fermentable fiber. Secondary contribution comes from fat quality (+12 points). Quality fat sources: named fat with marine oil (EPA and DHA source). The 8-point gap to the A-tier line is concentrated in protein quality (12.5 of 27 possible). Full protein quality requires named-species named-cut proteins in the top of the deck (e.g., "deboned chicken" rather than "chicken meal" or "poultry meal").
Quality carbohydrate sources with fermentable fiber.
Quality fat sources: named fat with marine oil (EPA and DHA source).
Premium micronutrient forms such as chelated minerals or natural vitamin E.
No negative drivers crossed our reporting threshold.
- Bottom 10% for fat quality in Royal Canin's lineup (12/16)
- Top quartile for protein quality in Royal Canin's lineup (12.5/27)
- Bottom quartile for crude fiber in grain-inclusive dry kibbles (4.2% DMB)
Computed against the rest of our catalog. Percentiles refresh on each catalog update.
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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.
- 2grainwheat
Whole wheat. Fine for most dogs, though a portion are sensitive. Not a quality concern, just a fit-for-your-dog question.
Position 2: major carbohydrate source.
- 3oat groats
Whole oats with only the inedible hull removed. The most intact form of oats available.
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.
- 5corn 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 5: supporting grain. Smaller contribution to the carb deck.
- 6brewers 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 6: supporting grain. Smaller contribution to the carb deck.
- 7fatchicken fat
Despite the name, a high-quality energy source. Concentrated calories plus essential fatty acids like linoleic acid. See why →
Position 7: trace fat. Below the level that materially shifts the fat profile.
- 8othernatural flavors
Same as natural flavor. Usually hydrolyzed liver or broth, adds palatability.
- 9dried 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 9: functional fiber for digestion or satiety.
- 10protein plantwheat gluten
Concentrated wheat protein. Like other plant gluten meals, it pads the protein number on the label without contributing meat-quality amino acids.
Position 10: moderate plant-protein boost. Less likely to materially shift the protein profile.
- 11fatfish oil
Concentrated omega-3s. The reason 'EPA' and 'DHA' get to show up on the bag.
Position 11. Moderate marine-oil inclusion. Supplements EPA/DHA without being the primary fat.
- 12vegetable oil
Unnamed plant oil. Could be soy, canola, corn, or a blend. Named oils like sunflower or canola are more transparent.
Position 12: trace fat. Below the level that materially shifts the fat profile.
- 13sodium aluminosilicate
Anti-caking agent that keeps powder ingredients flowing. Functional, not nutritional.
- 14mineralcalcium carbonate
Source of calcium. Functional. Required in complete dog foods, especially those without bone-in meat meals.
- 15mineralpotassium chloride
Required mineral. Sometimes used as a salt substitute. Standard inclusion in complete diets.
- 16powdered psyllium seed husk
- 17fiberfructooligosaccharides
Prebiotic fiber, often called FOS. Feeds beneficial gut bacteria, similar in function to inulin.
- 18mineralsodium tripolyphosphate
Preservative and texture agent in wet food. Functional at small doses, not a major concern, but some brands avoid it.
- 19supplementcholine chloride
Essential nutrient for liver and brain function. Standard inclusion in complete dog foods.
- 20preservative naturalrosemary extract
Natural preservative. Replaces synthetic ones like BHA and BHT.
- 21preserved with mixed tocopherols and citric acid
- 22mineralsalt
Sodium chloride. Required at small doses for normal physiology. Not a quality concern in standard amounts.
- 23supplementtaurine
Amino acid critical for heart health. Especially important in grain-free or pulse-heavy formulas where natural taurine precursors run thin.
- 24supplementl-lysine
Essential amino acid. Plant-protein-heavy formulas sometimes add it to round out the amino acid profile.
- 25mineralzinc proteinate
Zinc bound to protein for better absorption. The premium form of the mineral, versus zinc oxide which sits cheaper on the label.
Showing first 25 of 40. Position 1-5 has the largest weight in the recipe.
23 of 25 ingredients have a curated note. Coverage grows over time.
Royal Canin Size Health Nutrition Large Adult 5+ Dry Dog Food is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for maintenance.