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Purina ONE +Plus Natural Large Breed Adult Real Chicken Muscle & Joint Support Large Dry Dog Food, 40-lb bag
Purina ONE

+Plus Natural Large Breed Adult Real Chicken Muscle & Joint Support Large Dry Dog Food, 40-lb bag

Evidence Fair
AAFCO compliance inferred from product name
dry $1.52/lb

Purina ONE +Plus Natural Large Breed Adult Real Chicken Muscle & Joint Support Large Dry Dog Food, 40-lb bag earns a Sniff Score of 56/100 (C) with Fair evidence. Zero controversial ingredients flagged. Primary concern: no declared omega-3 source. fish oil, salmon oil, and algae oil all absent..

Graded by The Sniff System

Why this score

Reasonable protein quality. chicken delivers solid amino acid coverage.

PQI

AAFCO formulation inferred from declared adult maintenance. Verbatim statement not published by retailer.

ACF

No declared omega-3 source. Fish oil, salmon oil, and algae oil all absent.

FQI

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
12%
min (as fed)
Fiber
15.5%
max (as fed)
Moisture
12%
max
Ingredients

Read why each ingredient is good or bad for dogs.

29 total
Good Neutral Watch Flagged
  1. 1
    chicken

    Real meat. Primary protein source, with the amino acid profile dogs actually evolved to eat.

  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
    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.

  4. 4
    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.

  5. 5
    wheat

    Whole wheat. Fine for most dogs, though a portion are sensitive. Not a quality concern, just a fit-for-your-dog question.

  6. 6
    soybean meal

    Concentrated soy protein. Cheap plant protein that pads the label number, common in budget formulas.

  7. 7
    whole grain corn

    Whole corn with the kernel intact. Decent fiber and B vitamins, though it can crowd out meat in cheaper recipes.

  8. 8
    beef fat preserved with mixed tocopherols
  9. 9
    soybean hulls
  10. 10
    oat meal

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

  11. 11
    natural flavor

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

  12. 12
    glycerin

    Humectant used in soft-moist foods to keep them chewy. Safe in moderation but a signal of a processed semi-moist product.

  13. 13
    mono and dicalcium phosphate

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

  14. 14
    salt

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

  15. 15
    calcium carbonate

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

  16. 16
    potassium citrate

    Source of potassium. Sometimes added in urinary-support formulas to help manage urine pH.

  17. 17
    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 →

  18. 18
    carrots

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

  19. 19
    choline chloride

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

  20. 20
    malted barley extract
  21. 21
    zinc sulfate

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

  22. 22
    ferrous sulfate

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

  23. 23
    manganese sulfate

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

  24. 24
    copper sulfate

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

  25. 25
    calcium iodate

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

Showing first 25 of 29. Position 1-5 has the largest weight in the recipe.

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