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Purina ONE +Plus Natural Sensitive Stomach Skin & Coat Formula Dry Dog Food, 31.1-lb bag
Purina ONE

+Plus Natural Sensitive Stomach Skin & Coat Formula Dry Dog Food, 31.1-lb bag

Evidence Fair
dry $1.61/lb

Purina ONE +Plus Natural Sensitive Stomach Skin & Coat Formula Dry Dog Food, 31.1-lb bag earns a Sniff Score of 56/100 (C) with Fair evidence. Zero controversial ingredients flagged. Score capped at 59 due to no AAFCO statement.

Graded by The Sniff System

Why this score

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

FQI

Quality carbohydrate sources with declared fiber.

CQI

Includes egg, named fish, or organ meat for diverse high-bioavailability protein.

STACK

Score capped at 59 due to no AAFCO statement.

CAP why?

No AAFCO statement. Nutritional completeness unverified.

ACF

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: 30% ⓘ
Protein
26%
min (as fed)
Fat
16%
min (as fed)
Fiber
11.5%
max (as fed)
Moisture
12%
max
Ingredients

Read why each ingredient is good or bad for dogs.

23 total
Good Neutral Watch Flagged
  1. 1
    salmon

    Real fish meat. Natural source of omega-3s, which kibble usually has to add back from oil.

  2. 2
    rice

    Generic rice. Could be white or brown, the label doesn't say. Brown rice would be specified if it were.

  3. 3
    barley

    Whole grain with a low glycemic profile and some soluble fiber. Easy on blood sugar.

  4. 4
    oat meal

    Alternate spelling of oatmeal. Gentle whole grain, steady carb energy, soluble fiber.

  5. 5
    corn protein meal

    Concentrated corn protein. Similar in role to corn gluten meal, pads the protein number on the label without matching meat amino acids.

  6. 6
    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.

  7. 7
    beef fat preserved with mixed tocopherols
  8. 8
    natural flavor

    Legal term for animal-derived flavoring, usually hydrolyzed liver or broth. Adds taste, says nothing about quality.

  9. 9
    mono and dicalcium phosphate

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

  10. 10
    fish oil

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

  11. 11
    calcium carbonate

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

  12. 12
    potassium chloride

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

  13. 13
    salt

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

  14. 14
    carrots

    Real vegetable. Fiber, beta-carotene, and a small amount of antioxidant value.

  15. 15
    dried 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 →

  16. 16
    zinc sulfate

    Inorganic zinc. Effective at AAFCO doses but less well-absorbed than chelated forms like zinc proteinate.

  17. 17
    ferrous sulfate

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

  18. 18
    manganese sulfate

    Inorganic manganese. Functional but less well-absorbed than the chelated proteinate form.

  19. 19
    copper sulfate

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

  20. 20
    calcium iodate

    Source of iodine for thyroid function. Functional, required in complete formulas.

  21. 21
    sodium selenite Flagged

    Inorganic selenium. Effective at AAFCO levels, no documented safety concern in dogs despite what some pet food blogs claim. Selenium yeast is a marginal upgrade, not a necessity. See why →

  22. 22
    choline chloride

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

  23. 23
    l-lysine monohydrochloride. l418725

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