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Royal Canin Breed Health Nutrition Shih Tzu Adult Dry Dog Food, 10-lb bag
Royal Canin

Breed Health Nutrition Shih Tzu Adult Dry Dog Food, 10-lb bag

Evidence Fair
AAFCO compliance inferred from product name
dry $6.20/lb

Graded by The Sniff System

In plain English

Royal Canin Breed Health Nutrition Shih Tzu Adult Dry Dog Food is a dry formula for adult Shih Tzus, primarily featuring chicken by-product meal.

This formula includes quality carbohydrate sources with fermentable fiber, which can support digestive health. It also uses quality fat sources like chicken fat and fish oil, providing beneficial EPA and DHA. The product has AAFCO feeding trial substantiation for adult maintenance, which is a good sign of nutritional adequacy.

One thing to note is that this formula is plant-protein-dominated, with brewers rice listed as the first ingredient. This means the primary protein source is not animal-based.

Good fit for adult Shih Tzus. Less ideal if you prefer a formula with a meat-first protein source.

Summary written by The Sniff System from the data above. Same rubric, same drivers, expressed in English.

Who this is for

Good fit for active large sporting breeds like Golden Retrievers, Labrador Retrievers, and Irish Setters navigating diet-associated DCM concerns. Chicken by-product meal anchors position 3, with zero pulses in the top 15. In its 2022 update on diet-associated DCM, the FDA identified Golden Retrievers as the most reported breed, with 121 cases out of 1,382 total canine reports (8.8%) received between January 1, 2014, and November 1, 2022  (FDA, 2022) .

Looking at this for adult Golden Retrievers or Golden Retrievers with diet-associated DCM 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

Methodology

The Sniff System grades this product against 3 cited studies relevant to its profile. Each link opens the original source.

  • FDA, 2022
    cardiac · epidemiology · breed predisposition· cited in 5 claims
  • FDA, 2019
    diet composition· cited in 2 claims
  • NRC, 2006
    nutrient bioavailability

Every claim on Sniff traces to a source. If you find a citation that's wrong, outdated, or misapplied, tell us.

Why this score

Sniff scored this formula 67/100, landing in B-tier territory. The biggest contributor was carbohydrate quality (+16 points): Quality carbohydrate sources with fermentable fiber. The biggest detractor was protein quality (-16.5 points): Plant-protein-dominated formula. brewers rice as the #1 ingredient. To reach A-tier, this formula would need to gain about 8 points, most likely through protein quality.

What lifted the score

Quality carbohydrate sources with fermentable fiber.

CQI

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

FQI

AAFCO feeding trial substantiation for adult maintenance.

ACF
What pulled it down

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

PQI
What sets this apart
  • Bottom 1% for crude fiber in Royal Canin's lineup (3.3% DMB)
  • Top quartile for carb quality in Royal Canin's lineup (16/16)
  • Bottom 10% for DMB protein in Royal Canin's lineup (24.4%)

Computed against the rest of our catalog. Percentiles refresh on each catalog update.

Similar dog foods worth considering

Three lenses on products with formulation profiles similar to this one.

Surfaced from a vector similarity search across 3,491 scored dog foods. How this works.

Guaranteed analysis
Dry-matter protein: 24%
Protein
22%
min (as fed)
Fat
18%
min (as fed)
Fiber
3%
max (as fed)
Moisture
10%
max
Ingredients

Read why each ingredient is good or bad for dogs.

39 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. See why →

    Position 1 grain: primary carbohydrate base. This is a grain-inclusive formula with brewers rice as the dominant carb.

  2. 2
    brown rice

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

    Position 2: major carbohydrate source.

  3. 3
    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. See why →

    Position 3: significant protein contributor. Adds amino-acid diversity to the top of the deck.

  4. 4
    chicken fat

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

    Position 4: secondary fat. Often where marine oils sit when present alongside a primary land-animal fat.

  5. 5
    oat groats

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

    Position 5: supporting grain. Smaller contribution to the carb deck.

  6. 6
    wheat gluten

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

    Position 6: moderate plant-protein boost. Less likely to materially shift the protein profile.

  7. 7
    natural flavors

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

  8. 8
    dried 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.

  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.

    Position 9: functional fiber for digestion or satiety.

  10. 10
    fish oil

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

    Position 10. Moderate marine-oil inclusion. Supplements EPA/DHA without being the primary fat.

  11. 11
    vegetable oil

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

    Position 11: trace fat. Below the level that materially shifts the fat profile.

  12. 12
    sodium silico aluminate

    Same role as sodium aluminosilicate. Anti-caking agent at trace inclusion.

  13. 13
    calcium carbonate

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

  14. 14
    potassium chloride

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

  15. 15
    dl-methionine

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

  16. 16
    l-tyrosine
  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
    salt

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

  20. 20
    taurine

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

  21. 21
    choline chloride

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

  22. 22
    l-lysine

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

  23. 23
    marigold extract
  24. 24
    monocalcium phosphate

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

  25. 25
    glucosamine hydrochloride

    Joint-support compound. Most useful in larger doses for older dogs. The kibble dose is real but modest.

Showing first 25 of 39. Position 1-5 has the largest weight in the recipe.

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