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Royal Canin Veterinary Diet Adult Urinary SO Dry Dog Food, 25.3-lb bag
Royal Canin Veterinary Diet

Adult Urinary SO Dry Dog Food, 25.3-lb bag

Evidence Fair
AAFCO compliance inferred from product name
dry $5.06/lb

Royal Canin Veterinary Diet Adult Urinary SO Dry Dog Food, 25.3-lb bag earns a Sniff Score of 52/100 (C) with Fair evidence. Zero controversial ingredients flagged. Primary concern: plant-protein-dominated formula. brewers rice as the #1 ingredient..

Graded by The Sniff System

Why this score

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

FQI

AAFCO feeding trial substantiation for adult maintenance.

ACF

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

MNI

Plant-protein-dominated formula. brewers rice as the #1 ingredient.

PQI

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: 19% ⓘ
Protein
17%
min (as fed)
Fat
15%
min (as fed)
Fiber
3.7%
max (as fed)
Moisture
10%
max
Ingredients

Read why each ingredient is good or bad for dogs.

32 total
Good Neutral Watch Flagged
  1. 1
    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.

  2. 2
    corn

    Whole corn is more nutritious than it gets credit for, with decent amino acids and steady carbs. The bigger concern is when corn dominates the top of the ingredient list at the expense of named meat.

  3. 3
    chicken fat

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

  4. 4
    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.

  5. 5
    brewers rice flour
  6. 6
    corn gluten meal

    Concentrated corn protein. Inflates the protein percent on the label without matching meat-quality amino acids.

  7. 7
    natural flavors

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

  8. 8
    salt

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

  9. 9
    powdered cellulose

    Plant fiber, often from wood pulp. Cheap bulk filler. Not harmful, but a tell that the recipe is reaching for inexpensive bulk.

  10. 10
    potassium chloride

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

  11. 11
    vegetable oil

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

  12. 12
    calcium sulfate

    Source of calcium. Functional, required for AAFCO-complete formulas.

  13. 13
    fish oil

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

  14. 14
    monocalcium phosphate

    Source of calcium and phosphorus. Standard mineral inclusion in complete dog foods.

  15. 15
    dl-methionine

    Essential amino acid. Often added when plant proteins dominate, since methionine is naturally lower in pulses than meat.

  16. 16
    fructooligosaccharides

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

  17. 17
    l-lysine

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

  18. 18
    choline chloride

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

  19. 19
    taurine

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

  20. 20
    zinc proteinate

    Zinc bound to protein for better absorption. The premium form of the mineral, versus zinc oxide which sits cheaper on the label.

  21. 21
    zinc oxide

    Inorganic zinc. Cheapest mineral form on the market. Functional but less bioavailable than chelated alternatives.

  22. 22
    ferrous sulfate

    Inorganic iron. Standard mineral source. Iron proteinate is the gentler, better-absorbed premium form.

  23. 23
    manganese proteinate

    Manganese bound to protein for better absorption. The chelated form most premium brands use.

  24. 24
    manganous oxide

    Inorganic manganese. Functional, cheaper than chelated forms, less efficiently absorbed.

  25. 25
    copper sulfate

    Inorganic copper. Standard, effective at small doses. Premium formulas tend to use copper proteinate instead.

Showing first 25 of 32. Position 1-5 has the largest weight in the recipe.

24 of 25 ingredients have a curated note. Coverage grows over time.