Skin & Coat Formula All Life Stages Dry Dog Food, 30-lb bag
Graded by The Sniff System
Diamond Naturals Skin & Coat Formula is a dry food for all life stages, featuring salmon and fish as its main protein sources.
This formula offers reasonable protein quality, with salmon providing solid amino acid coverage. The inclusion of named fish like salmon and fish meal also contributes to a diverse, high-bioavailability protein profile. It's formulated for all life stages, which implies it meets AAFCO nutritional standards for growth and maintenance.
The formula does contain high legume stacking, with lentils, peas, and pea flour all appearing in the top 15 ingredients. This pattern has been flagged in some studies, though it's noted as mitigated by taurine supplementation or organ meat.
Good fit for dogs of all life stages, especially those needing skin and coat support. Less ideal if you prefer formulas with fewer legumes.
Summary written by The Sniff System from the data above. Same rubric, same drivers, expressed in English.
Good fit for active large sporting breeds like Labrador Retrievers, Golden Retrievers, and English Setters navigating weight management. At 408 kcal/cup this formula runs on the rich side, with crude fiber at 5.5% (above the catalog median, supports satiety). 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. 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 If you find a citation that's wrong, outdated, or misapplied, tell us.
Sniff scored this formula 53/100, landing in C-tier (acceptable-with-notes). The biggest contributor was protein quality (+16.5 points): Reasonable protein quality. salmon delivers solid amino acid coverage. The biggest detractor was controversial-ingredient penalty (-2 points): Contains high legume stacking. Multiple pulse-family ingredients in top 15. Mitigated by taurine supplementation or organ meat (natural taurine precursor) in top 10. To reach B-tier, this formula would need to gain about 7 points, most likely through controversial-ingredient penalty.
Reasonable protein quality. salmon delivers solid amino acid coverage.
Includes egg, named fish, or organ meat for diverse high-bioavailability protein.
AAFCO formulation inferred from declared all life stages. Verbatim statement not published by retailer.
Contains high legume stacking. Multiple pulse-family ingredients in top 15. Mitigated by taurine supplementation or organ meat (natural taurine precursor) in top 10..
- Lowest fat quality in Diamond Naturals's lineup (7/16)
- Top quartile for crude fiber in Diamond Naturals's lineup (6.1% DMB)
- Lowest carb quality in Diamond Naturals's lineup (11/16)
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.
Diamond Naturals Senior Formula Dry Dog Food, 35-lb bag
Scores 25 points higher with a similar formulation profile.
Diamond Naturals Chicken & Rice Formula All Life Stages Dry Dog Food, 40-lb bag
Chicken instead of salmon, 22 points higher, different brand.
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 animalsalmon
Real fish meat. Natural source of omega-3s, which kibble usually has to add back from oil.
Position 1: primary protein source. After cooking removes water, this may drop in proportional weight, but it anchors the recipe.
- 2protein animalfish meal
Concentrated fish protein, usually whitefish, herring, or mackerel. Strong amino acid profile. See why →
Position 2: co-primary protein. Two named animal proteins in the top 2 is a strong protein build.
- 3vegetablepotato
Standard white potato. Steady carb source, common starch in grain-free recipes.
Position 3: meaningful whole-food inclusion. Source of vitamins, antioxidants, or natural fiber.
- 4legumelentils
Same concern as peas. Affordable plant protein, but when they pile up in the top 5 ingredients, it's a flag. See why →
Position 4. Within the FDA's top-5 DCM-pattern threshold. Especially notable if multiple pulses stack here.
- 5legumepeas
Cheap protein bulk. Fine in small amounts, but when peas stack with lentils and chickpeas in the top ingredients, it's the pattern the FDA flagged in its heart-disease investigation. See why →
Position 5. Within the FDA's top-5 DCM-pattern threshold. Especially notable if multiple pulses stack here.
- 6legumepea flour
Powdered peas, usually used as a binder or filler. Counts toward the legume stack the FDA flagged.
Position 6. Moderate inclusion. Contributes carbohydrate and some plant protein.
- 7fatcanola oil
Plant oil. Some omega-3 from the parent plant, though dogs absorb it less efficiently than fish-derived omega-3. Fine in moderation.
Position 7: trace fat. Below the level that materially shifts the fat profile.
- 8dried yeast
Natural source of B vitamins and trace minerals. Adds a savory flavor that dogs respond well to.
- 9dried tomato pomace
The fiber-rich byproduct of tomato processing. Sometimes flagged unfairly. It's a real fiber source, not a filler shortcut.
Position 9: functional fiber for digestion or satiety.
- 10othernatural flavor
Legal term for animal-derived flavoring, usually hydrolyzed liver or broth. Adds taste, says nothing about quality.
- 11fatflaxseed
Plant source of omega-3. Helpful for skin and coat, though dogs absorb omega-3 from fish more efficiently.
Position 11: trace fat. Below the level that materially shifts the fat profile.
- 12mineraldicalcium phosphate
Calcium and phosphorus combined. Required source of both minerals, especially in formulas without much bone content.
- 13mineralsalt
Sodium chloride. Required at small doses for normal physiology. Not a quality concern in standard amounts.
- 14mineralpotassium chloride
Required mineral. Sometimes used as a salt substitute. Standard inclusion in complete diets.
- 15supplementdl-methionine
Essential amino acid. Often added when plant proteins dominate, since methionine is naturally lower in pulses than meat.
- 16supplementcholine chloride
Essential nutrient for liver and brain function. Standard inclusion in complete dog foods.
- 17supplementtaurine
Amino acid critical for heart health. Especially important in grain-free or pulse-heavy formulas where natural taurine precursors run thin.
- 18fiberdried chicory root
Natural prebiotic. Feeds beneficial gut bacteria. The same compound (inulin) used in human gut-health products.
- 19supplementl-carnitine
Amino acid derivative that helps the body convert fat into energy. Common in weight-management formulas.
- 20vegetablekale
Leafy green with antioxidants and fiber. Small dose in kibble, but it's not just for marketing.
- 21chia seed
Plant source of omega-3 and fiber. Like flaxseed, useful in trace amounts.
- 22vegetablepumpkin
Soluble fiber that supports stool quality. Mild and well-tolerated.
- 23fruitblueberries
Antioxidants, real. But the amount in any kibble is too small to do much. Mostly marketing.
- 24oranges
- 25grainquinoa
Pseudo-grain with a complete amino acid profile. Rare in dog food because it's expensive.
Showing first 25 of 56. Position 1-5 has the largest weight in the recipe.
24 of 25 ingredients have a curated note. Coverage grows over time.