Size Health Nutrition X-Small Adult 8+ Dry Dog Food, 2.5-lb bag
Graded by The Sniff System
Royal Canin Size Health Nutrition X-Small Adult 8+ Dry Dog Food is a dry kibble formulated for adult dogs 8 years and older, primarily featuring chicken by-product.
This formula includes quality carbohydrate sources with fermentable fiber, which can be good for digestion. It also uses quality fat sources like named chicken fat and fish oil, providing beneficial EPA and DHA. The product has AAFCO feeding trial substantiation for adult maintenance, which is a strong point for nutritional completeness.
The formula is plant-protein-dominated, with brewers rice listed as the first ingredient. This means a significant portion of the protein comes from plant sources rather than animal sources.
Good fit for X-small adult dogs 8 years and older. Less ideal if you prefer a formula with a meat-first ingredient list.
Summary written by The Sniff System from the data above. Same rubric, same drivers, expressed in English.
Good fit for active large sporting breeds, including the Golden Retriever, navigating diet-associated DCM concerns. Chicken fat anchors position 2, 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
MethodologyThe Sniff System grades this product against 3 cited studies relevant to its profile. Each link opens the original source.
- FDA, 2022cardiac · epidemiology · breed predisposition· cited in 5 claims
- FDA, 2019diet composition· cited in 2 claims
- NRC, 2006nutrient bioavailability
Every claim on Sniff traces to a source. If you find a citation that's wrong, outdated, or misapplied, tell us.
Sniff scored this formula 65/100, 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 points): Plant-protein-dominated formula. brewers rice as the #1 ingredient. To reach A-tier, this formula would need to gain about 10 points, most likely through protein quality.
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.
Plant-protein-dominated formula. brewers rice as the #1 ingredient.
- Bottom 10% for DMB protein in Royal Canin's lineup (24.4%)
- Top quartile for caloric density in Royal Canin's lineup (362 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.
Similar dog foods worth considering
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Scores 3 points higher with a similar formulation profile.
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$3.33/lb vs your seed's $9.60/lb (65% 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.
- 1brewers 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.
- 2fatchicken fat
Despite the name, a high-quality energy source. Concentrated calories plus essential fatty acids like linoleic acid. See why →
Position 2: primary fat source. Drives the formula's caloric density and omega-6 content.
- 3protein 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 3: significant protein contributor. Adds amino-acid diversity to the top of the deck.
- 4protein plantcorn gluten meal
Concentrated corn protein. Inflates the protein percent on the label without matching meat-quality amino acids.
Position 4: plant protein in the top 5. Stacked with animal protein, can inflate the crude protein number without matching the amino-acid quality of named animal sources.
- 5graincorn
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.
Position 5: supporting grain. Smaller contribution to the carb deck.
- 6grainbrown rice
Whole grain that's easy to digest. Steady carb energy plus a little fiber.
Position 6: supporting grain. Smaller contribution to the carb deck.
- 7othernatural flavors
Same as natural flavor. Usually hydrolyzed liver or broth, adds palatability.
- 8protein 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 8: moderate plant-protein boost. Less likely to materially shift the protein profile.
- 9fiberdried chicory root
Natural prebiotic. Feeds beneficial gut bacteria. The same compound (inulin) used in human gut-health products.
Position 9: functional fiber for digestion or satiety.
- 10vegetable oil
Unnamed plant oil. Could be soy, canola, corn, or a blend. Named oils like sunflower or canola are more transparent.
Position 10: trace fat. Below the level that materially shifts the fat 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.
- 12psyllium seed husk
Soluble fiber. Supports stool quality. The same fiber humans use for digestive regularity.
Position 12: trace fiber inclusion.
- 13mineralpotassium chloride
Required mineral. Sometimes used as a salt substitute. Standard inclusion in complete diets.
- 14calcium sulfate
Source of calcium. Functional, required for AAFCO-complete formulas.
- 15mineralcalcium carbonate
Source of calcium. Functional. Required in complete dog foods, especially those without bone-in meat meals.
- 16supplementl-arginine
- 17supplementl-lysine
Essential amino acid. Plant-protein-heavy formulas sometimes add it to round out the amino acid profile.
- 18l-tyrosine
- 19monocalcium phosphate
Source of calcium and phosphorus. Standard mineral inclusion in complete dog foods.
- 20supplementdl-methionine
Essential amino acid. Often added when plant proteins dominate, since methionine is naturally lower in pulses than meat.
- 21fiberfructooligosaccharides
Prebiotic fiber, often called FOS. Feeds beneficial gut bacteria, similar in function to inulin.
- 22mineralsodium tripolyphosphate
Preservative and texture agent in wet food. Functional at small doses, not a major concern, but some brands avoid it.
- 23supplementcholine chloride
Essential nutrient for liver and brain function. Standard inclusion in complete dog foods.
- 24mineralsalt
Sodium chloride. Required at small doses for normal physiology. Not a quality concern in standard amounts.
- 25mineralmagnesium oxide
Inorganic magnesium. Functional at AAFCO doses, less efficiently absorbed than chelated forms.
Showing first 25 of 41. Position 1-5 has the largest weight in the recipe.
23 of 25 ingredients have a curated note. Coverage grows over time.