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Merrick Grain-Free Dry Dog Food Real Lamb & Sweet Potato Recipe, 4-lb bag
Merrick

Grain-Free Dry Dog Food Real Lamb & Sweet Potato Recipe, 4-lb bag

Evidence Fair
AAFCO compliance inferred from product name
dry $6.75/lb

Merrick Grain-Free Dry Dog Food Real Lamb & Sweet Potato Recipe, 4-lb bag earns a Sniff Score of 68/100 (B) with Fair evidence. 1 controversial ingredient flagged. Strong protein profile with lamb as the primary ingredient, delivering high biological value..

Graded by The Sniff System

Why this score

Strong protein profile with lamb as the primary ingredient, delivering high biological value.

PQI

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

FQI

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

STACK

Contains menadione. Banned for human OTC use but tolerated at AAFCO-permitted levels in pet food. The only AAFCO-permitted vitamin K source..

CIP

Controversial ingredients · 2

  • 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.
  • menadione
    Synthetic vitamin K3. Banned in human supplements due to toxicity concerns at high doses. Permitted in pet food but premium brands use natural vitamin K alternatives.

Every flagged ingredient has a published basis (confirmed harm / regulatory action / precautionary). See methodology →

Guaranteed analysis
Dry-matter protein: 34% ⓘ
Protein
30%
min (as fed)
Fat
17%
min (as fed)
Fiber
4.5%
max (as fed)
Moisture
11%
max
Ingredients

Read why each ingredient is good or bad for dogs.

38 total
Good Neutral Watch Flagged
  1. 1
    lamb

    Real meat. Often used for dogs with chicken or beef sensitivities. Slightly higher fat content than chicken.

  2. 2
    chicken meal

    Chicken with the water cooked out. Per pound, packs more protein than fresh chicken.

  3. 3
    turkey meal

    Turkey with the water cooked out. Per pound, packs more protein than fresh turkey.

  4. 4
    sweet potato

    Complex carb with fiber and beta-carotene. Gentle on the stomach.

  5. 5
    potato

    Standard white potato. Steady carb source, common starch in grain-free recipes.

  6. 6
    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 →

  7. 7
    chicken fat

    Despite the name, a high-quality energy source. Concentrated calories plus essential fatty acids like linoleic acid.

  8. 8
    natural flavor

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

  9. 9
    whitefish meal

    Whitefish cooked into a dry concentrate. Strong protein source, common in premium formulas.

  10. 10
    flaxseed

    Plant source of omega-3. Helpful for skin and coat, though dogs absorb omega-3 from fish more efficiently.

  11. 11
    dried yeast

    Natural source of B vitamins and trace minerals. Adds a savory flavor that dogs respond well to.

  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
    choline chloride

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

  15. 15
    apples

    Real fruit, some fiber and antioxidants. The amount in kibble is too small to matter much.

  16. 16
    blueberries

    Antioxidants, real. But the amount in any kibble is too small to do much. Mostly marketing.

  17. 17
    salmon oil

    Pure omega-3s. The thing skin-and-coat formulas are usually built around.

  18. 18
    zinc amino acid complex

    Zinc bound to amino acids for better absorption. Same idea as zinc proteinate, the premium form of the mineral.

  19. 19
    iron amino acid complex

    Iron bound to amino acids for better absorption. Premium form versus inorganic iron sulfate.

  20. 20
    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 →

  21. 21
    manganese amino acid complex

    Manganese bound to amino acids for better absorption. The chelated form most premium brands use.

  22. 22
    copper amino acid complex

    Copper bound to amino acids for better absorption. Premium form versus copper sulfate.

  23. 23
    calcium iodate

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

  24. 24
    dl-methionine

    Essential amino acid. Often added when plant proteins dominate, since methionine is naturally lower in pulses than meat.

  25. 25
    taurine

    Amino acid critical for heart health. Especially important in grain-free or pulse-heavy formulas where natural taurine precursors run thin.

Showing first 25 of 38. Position 1-5 has the largest weight in the recipe.

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