Natural SmartBlend Lamb & Rice Formula Dry Dog Food, 40-lb bag
Graded by The Sniff System
Purina ONE Natural SmartBlend Lamb & Rice Formula is a dry dog food featuring lamb and chicken by-product as its main protein sources.
This formula includes quality carbohydrate sources that provide fermentable fiber, which can be beneficial for supporting healthy digestion and gut flora. This is a positive for dogs who might need help with digestive regularity.
A significant watch point is the absence of an AAFCO statement, which means the nutritional completeness of this food is unverified. Also, there's no declared source of omega-3 fatty acids like fish or algae oil.
Good fit for dogs needing fermentable fiber. Less ideal if you want verified nutritional completeness or a declared omega-3 source.
Summary written by The Sniff System from the data above. Same rubric, same drivers, expressed in English.
Frenchies have notoriously sensitive GI tracts plus a tendency toward obesity given their low activity needs. Limited-ingredient formulas with moderate calorie density tend to fit them well. Good fit for adult French Bulldogs and similar lower-energy companion breeds navigating a sensitive stomach. Lamb leads at position 1, with dried chicory root (prebiotic fiber) at position 13 on the deck.
Looking at this for adult French Bulldogs or French Bulldogs with a sensitive stomach ? 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.
- NRC, 2006digestibility · fiber· cited in 2 claims
- AAFCO, 2024zinc
- Swanson et al., 2002prebiotics
Every claim on Sniff traces to a source. If you find a citation that's wrong, outdated, or misapplied, tell us.
At 51/100, this formula lands mid-pack. The lift comes from carbohydrate quality, worth 12 points to the final number: Quality carbohydrate sources with fermentable fiber. The ceiling on this score is 59, set because the AAFCO nutritional adequacy statement isn't disclosed on the retailer page (so our methodology can't verify the formula meets adult, growth, or all-life-stages standards). The cap isn't the binding constraint here. Fat quality would also need to improve to reach the next band.
Quality carbohydrate sources with fermentable fiber.
No declared omega-3 source. Fish oil, salmon oil, and algae oil all absent.
No AAFCO statement. Nutritional completeness unverified.
- Lowest crude fiber in Purina ONE's lineup (3.4% DMB)
- Top quartile for DMB fat in grain-inclusive dry kibbles (18.2%)
- Lowest protein quality in Purina ONE's lineup (11.4/27)
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 Large Breed Adult Lamb Meal & Rice Formula Dry Dog Food, 40-lb bag
Scores 17 points higher with a similar formulation profile.
Wholesomes with Lamb Meal & Rice Formula Dry Dog Food, 40-lb bag
$1.30/lb vs your seed's $1.48/lb (12% 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.
- 1protein animallamb
Real meat. Often used for dogs with chicken or beef sensitivities. Slightly higher fat content than chicken.
Position 1: primary protein source. After cooking removes water, this may drop in proportional weight, but it anchors the recipe.
- 2grainrice
Generic rice. Could be white or brown, the label doesn't say. Brown rice would be specified if it were.
Position 2: major carbohydrate source.
- 3grainwhole grain corn
Whole corn with the kernel intact. Decent fiber and B vitamins, though it can crowd out meat in cheaper recipes.
Position 3: major carbohydrate source.
- 4grainwheat
Whole wheat. Fine for most dogs, though a portion are sensitive. Not a quality concern, just a fit-for-your-dog question.
Position 4: supporting grain. Smaller contribution to the carb deck.
- 5protein 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 5: significant protein contributor. Adds amino-acid diversity to the top of the deck.
- 6corn protein meal
Concentrated corn protein. Similar in role to corn gluten meal, pads the protein number on the label without matching meat amino acids.
Position 6: supporting grain. Smaller contribution to the carb deck.
- 7protein plantsoybean meal
Concentrated soy protein. Cheap plant protein that pads the label number, common in budget formulas.
Position 7: moderate plant-protein boost. Less likely to materially shift the protein profile.
- 8beef fat preserved with mixed-tocopherols
Real animal fat from a named species, with natural vitamin E doing the preservation. The clean version.
Position 8: supporting protein. Modest contribution to total protein weight.
- 9glycerin
Humectant used in soft-moist foods to keep them chewy. Safe in moderation but a signal of a processed semi-moist product.
- 10othernatural flavor
Legal term for animal-derived flavoring, usually hydrolyzed liver or broth. Adds taste, says nothing about quality.
- 11mineralcalcium carbonate
Source of calcium. Functional. Required in complete dog foods, especially those without bone-in meat meals.
- 12mono and dicalcium phosphate
Source of calcium and phosphorus. Standard inclusion in complete dog foods.
- 13fiberdried chicory root
Natural prebiotic. Feeds beneficial gut bacteria. The same compound (inulin) used in human gut-health products.
Position 13: trace fiber inclusion.
- 14mineralsalt
Sodium chloride. Required at small doses for normal physiology. Not a quality concern in standard amounts.
- 15soybean oil
Plant oil. High in omega-6, which is required but commonly oversupplied. Fine in moderation.
Position 15: trace fat. Below the level that materially shifts the fat profile.
- 16mineralpotassium chloride
Required mineral. Sometimes used as a salt substitute. Standard inclusion in complete diets.
- 17vegetable juice
- 18vegetablecarrots
Real vegetable. Fiber, beta-carotene, and a small amount of antioxidant value.
- 19dried peas
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 →
- 20supplementdl-methionine
Essential amino acid. Often added when plant proteins dominate, since methionine is naturally lower in pulses than meat.
- 21mineralzinc sulfate
Inorganic zinc. Effective at AAFCO doses but less well-absorbed than chelated forms like zinc proteinate.
- 22mineralferrous sulfate
Inorganic iron. Standard mineral source. Iron proteinate is the gentler, better-absorbed premium form.
- 23mineralmanganese sulfate
Inorganic manganese. Functional but less well-absorbed than the chelated proteinate form.
- 24mineralcopper sulfate
Inorganic copper. Standard, effective at small doses. Premium formulas tend to use copper proteinate instead.
- 25mineralcalcium iodate
Source of iodine for thyroid function. Functional, required in complete formulas.
Showing first 25 of 28. Position 1-5 has the largest weight in the recipe.
24 of 25 ingredients have a curated note. Coverage grows over time.