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Nulo FreeStyle Limited Ingredient Lamb Recipe Dry Dog Food, 24-lb bag
Nulo

FreeStyle Limited Ingredient Lamb Recipe Dry Dog Food, 24-lb bag

Evidence Fair
AAFCO compliance inferred from product name
dry $3.92/lb

Graded by The Sniff System

In plain English

Nulo FreeStyle Limited Ingredient Lamb Recipe Dry Dog Food is a dry food built around lamb as its primary protein.

This formula uses quality fat sources, including named fats and salmon oil, which provides beneficial EPA and DHA. It features a strong protein architecture with fresh lamb paired with lamb meal, ensuring good protein content. The formulation also appears to meet AAFCO standards, even if the verbatim statement isn't published by the retailer.

Nothing concerning in the deck.

Good fit for adult dogs, especially those who might benefit from a limited ingredient diet. Nothing serious working against it.

Summary written by The Sniff System from the data above. Same rubric, same drivers, expressed in English.

Who this is for

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. Good fit for adult Labrador Retrievers and similar active sporting breeds navigating weight management. At 415 kcal/cup this formula runs on the rich side, with crude fiber at 5% (above the catalog median, supports satiety). 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

Methodology

The Sniff System grades this product against 3 cited studies relevant to its profile. Each link opens the original source.

Every claim on Sniff traces to a source. If you find a citation that's wrong, outdated, or misapplied, tell us.

Why this score

At 67/100, this formula lands in solid B territory. The lift comes from fat quality, worth 12 points to the final number: Quality fat sources: named fat with marine oil (EPA and DHA source). Secondary contribution comes from ingredient diversity (+5 points). Named fresh meat paired with same-species meal, a strong extrusion architecture. The 8-point gap to the A-tier line is concentrated in protein quality (14 of 27 possible). Full protein quality requires named-species named-cut proteins in the top of the deck (e.g., "deboned chicken" rather than "chicken meal" or "poultry meal").

What lifted the score

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

FQI

Named fresh meat paired with same-species meal, a strong extrusion architecture.

STACK

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

ACF
What pulled it down

No negative drivers crossed our reporting threshold.

What sets this apart
  • Bottom 10% for carb quality in Nulo's lineup (11/16)
  • Bottom quartile for DMB protein in Nulo's lineup (31.1%)
  • Bottom quartile for DMB fat in Nulo's lineup (17.8%)

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.

Surfaced from a vector similarity search across 3,491 scored dog foods. How this works.

Guaranteed analysis
Dry-matter protein: 31%
Protein
28%
min (as fed)
Fat
16%
min (as fed)
Fiber
5%
max (as fed)
Moisture
10%
max
Ingredients

Read why each ingredient is good or bad for dogs.

42 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.

    Position 1: primary protein source. After cooking removes water, this may drop in proportional weight, but it anchors the recipe.

  2. 2
    lamb meal

    Lamb cooked down to a dry concentrate. Per pound, more protein than fresh lamb. See why →

    Position 2: co-primary protein. Two named animal proteins in the top 2 is a strong protein build.

  3. 3
    chickpeas

    Also called garbanzo beans. Affordable plant protein source, part of the legume stack the FDA examined in its heart-disease investigation. See why →

    Position 3. Pulse-family ingredient this high in the deck is a notable build choice. When stacked with other pulses in the top 10, matches the formulation pattern the FDA flagged in its diet-associated DCM investigation.

  4. 4
    lentils

    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.

  5. 5
    sweet potato

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

    Position 5: meaningful whole-food inclusion. Source of vitamins, antioxidants, or natural fiber.

  6. 6
    canola 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 6: secondary fat. Often where marine oils sit when present alongside a primary land-animal fat.

  7. 7
    ground flaxseed

    Cracked flaxseed for better digestibility. Same plant omega-3s as whole flaxseed, just easier for the dog to extract.

    Position 7: trace fat. Below the level that materially shifts the fat profile.

  8. 8
    ground miscanthus grass

    Same as miscanthus grass. A plant fiber source, mostly there for stool quality.

  9. 9
    natural flavor

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

  10. 10
    salt

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

  11. 11
    dl-methionine

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

  12. 12
    salmon oil

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

    Position 12. Moderate marine-oil inclusion. Supplements EPA/DHA without being the primary fat.

  13. 13
    choline chloride

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

  14. 14
    taurine

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

  15. 15
    potassium chloride

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

  16. 16
    l-tryptophan

    Essential amino acid. Sometimes added in calming or weight-management formulas.

  17. 17
    vitamin e supplement

    Required nutrient and a natural antioxidant. Often pulls double duty as a preservative.

  18. 18
    inulin

    Prebiotic fiber that feeds beneficial gut bacteria. Same compound found in chicory root.

  19. 19
    zinc proteinate

    Zinc bound to protein for better absorption. The premium form of the mineral, versus zinc oxide which sits cheaper on the label.

  20. 20
    zinc sulfate

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

  21. 21
    l-ascorbyl-2-polyphosphate

    A stable form of vitamin C used in pet food. Provides antioxidant support and survives processing better than plain ascorbic acid.

  22. 22
    iron proteinate

    Iron bound to protein for better absorption. The premium form versus inorganic iron sulfate.

  23. 23
    niacin supplement

    B vitamin (B3). Required in complete dog foods, added as a supplement to standardize the dose.

  24. 24
    ferrous sulfate

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

  25. 25
    copper proteinate

    Copper bound to protein for better absorption. Common in better-formulated diets.

Showing first 25 of 42. Position 1-5 has the largest weight in the recipe.

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