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Royal Canin Size Health Nutrition Large Adult 5+ Dry Dog Food, 30-lb bag
Royal Canin

Size Health Nutrition Large Adult 5+ Dry Dog Food, 30-lb bag

Evidence Fair
dry adult maintenance $3.67/lb

Royal Canin Size Health Nutrition Large Adult 5+ Dry Dog Food, 30-lb bag earns a Sniff Score of 67/100 (B) with Fair evidence. Zero controversial ingredients flagged. Quality carbohydrate sources with fermentable fiber..

Graded by The Sniff System

Why this score

Quality carbohydrate sources with fermentable fiber.

CQI

Quality fat sources: named fat with marine oil (EPA and DHA source).

FQI

Premium micronutrient forms such as chelated minerals or natural vitamin E.

MNI

Controversial ingredients · 1

  • sodium selenite
    Synthetic selenium source. Selenium is essential, but sodium selenite has a narrower safety margin than organic alternatives like selenium yeast. Better-formulated foods use the organic form.

Every flagged ingredient has a published basis (confirmed harm / regulatory action / precautionary). See methodology →

Guaranteed analysis
Dry-matter protein: 27%
Protein
24%
min (as fed)
Fat
15%
min (as fed)
Fiber
3.8%
max (as fed)
Moisture
10.5%
max
Ingredients

Read why each ingredient is good or bad for dogs.

40 total
Good Neutral Watch Flagged
  1. 1
    chicken 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.

  2. 2
    wheat

    Whole wheat. Fine for most dogs, though a portion are sensitive. Not a quality concern, just a fit-for-your-dog question.

  3. 3
    oat groats

    Whole oats with only the inedible hull removed. The most intact form of oats available.

  4. 4
    brown rice

    Whole grain that's easy to digest. Steady carb energy plus a little fiber.

  5. 5
    corn protein meal

    Concentrated corn protein. Similar in role to corn gluten meal, pads the protein number on the label without matching meat amino acids.

  6. 6
    brewers 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.

  7. 7
    chicken fat

    Despite the name, a high-quality energy source. Concentrated calories plus essential fatty acids like linoleic acid.

  8. 8
    natural flavors

    Same as natural flavor. Usually hydrolyzed liver or broth, adds palatability.

  9. 9
    dried plain beet pulp

    Beet fiber, with the sugar removed. Long unfairly maligned. It's a real soluble fiber that supports stool quality.

  10. 10
    wheat gluten

    Concentrated wheat protein. Like other plant gluten meals, it pads the protein number on the label without contributing meat-quality amino acids.

  11. 11
    fish oil

    Concentrated omega-3s. The reason 'EPA' and 'DHA' get to show up on the bag.

  12. 12
    vegetable oil

    Unnamed plant oil. Could be soy, canola, corn, or a blend. Named oils like sunflower or canola are more transparent.

  13. 13
    sodium aluminosilicate

    Anti-caking agent that keeps powder ingredients flowing. Functional, not nutritional.

  14. 14
    calcium carbonate

    Source of calcium. Functional. Required in complete dog foods, especially those without bone-in meat meals.

  15. 15
    potassium chloride

    Required mineral. Sometimes used as a salt substitute. Standard inclusion in complete diets.

  16. 16
    powdered psyllium seed husk
  17. 17
    fructooligosaccharides

    Prebiotic fiber, often called FOS. Feeds beneficial gut bacteria, similar in function to inulin.

  18. 18
    sodium tripolyphosphate

    Preservative and texture agent in wet food. Functional at small doses, not a major concern, but some brands avoid it.

  19. 19
    choline chloride

    Essential nutrient for liver and brain function. Standard inclusion in complete dog foods.

  20. 20
    rosemary extract

    Natural preservative. Replaces synthetic ones like BHA and BHT.

  21. 21
    preserved with mixed tocopherols and citric acid
  22. 22
    salt

    Sodium chloride. Required at small doses for normal physiology. Not a quality concern in standard amounts.

  23. 23
    taurine

    Amino acid critical for heart health. Especially important in grain-free or pulse-heavy formulas where natural taurine precursors run thin.

  24. 24
    l-lysine

    Essential amino acid. Plant-protein-heavy formulas sometimes add it to round out the amino acid profile.

  25. 25
    zinc 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.

AAFCO statement

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.