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Kirkland Signature Nature's Domain Salmon & Sweet Potato Formula Dry Dog Food Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food

Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food scores higher on KibbleLab, 9.3 to 8.3. Compare ingredients, guaranteed analysis, and AAFCO nutritional adequacy, side by side.

Kirkland Signature Nature's Domain Salmon & Sweet Potato Formula Dry Dog Food and Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food compared

Nutrients:
As Fed
Kirkland Signature Nature's Domain Salmon & Sweet Potato Formula Dry Dog Food
Kirkland Signature Nature's Domain Salmon & Sweet Potato Formula Dry Dog Food
Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food
Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food

Verified Sep 13, 2026

KibbleLab score The KibbleLab expert rating, 0 to 10, based on published veterinary science.
8.3 / 10 9.3 / 10
Guaranteed analysis (as fed)
Protein Guaranteed analysis gives label minimums and maximums, not measured values, shown as fed.
27.00% 32.00%
Fat 15.00% 16.00%
Fiber 4.00% 3.50%
Omega-3 0.40% 0.60%
Omega-6 2.60% 2.20%
Taurine 0.12% 0.17%
Moisture Higher moisture means a wetter food; it dilutes the other percentages above.
10.00% 11.00%
Calories 3580 kcal/kg 3744 kcal/kg
Calorie density Moderate Moderate
Ingredients
Full ingredient list Every ingredient on each label, in order of weight.
Salmon, salmon meal, sweet potatoes, potatoes, peas, fish meal, canola oil (preserved with mixed tocopherols), pea flour, dried beet pulp, natural flavor, flaxseed, salmon oil (a source of DHA), salt, potassium chloride, DL-Methionine, dicalcium phosphate, choline chloride, taurine, blueberries, raspberries, tomatoes, dried chicory root, yucca schidigera extract, dried Lactobacillus plantarum fermentation product, dried Bacillus subtilis fermentation product, dried Lactobacillus acidophilus fermentation product, dried Enterococcus faecium fermentation product, dried Bifidobacterium animalis fermentation product, vitamin E supplement, iron proteinate, zinc proteinate, copper proteinate, ferrous sulfate, zinc sulfate, manganese sulfate, copper sulfate, potassium iodide, thiamine mononitrate, manganese proteinate, ascorbic acid (preservative), vitamin A supplement, biotin, niacin, calcium pantothenate, sodium selenite, pyridoxine hydrochloride, vitamin B12 supplement, riboflavin, vitamin D3 supplement, folic acid. Show full list
Deboned Salmon, Salmon Meal, Sweet Potatoes, Potatoes, Peas, Whitefish Meal, Pork Fat Preserved With Mixed Tocopherols, Potato Protein, Natural Flavor, Whitefish, Flaxseed, Sunflower Oil, Miscanthus Grass, Dried Yeast, Potassium Chloride, Salt, Tapioca, Choline Chloride, MINERALS [Zinc Amino Acid Complex, Iron Amino Acid Complex, Sodium Selenite, Manganese Amino Acid Complex, Copper Amino Acid Complex, Calcium Iodate], DL-Methionine, Taurine, VITAMINS [Vitamin E Supplement, Vitamin B-12 Supplement, Vitamin A Supplement, Niacin (Vitamin B-3), Thiamine Mononitrate (Vitamin B-1), Calcium Pantothenate (Vitamin B-5), Folic Acid (Vitamin B-9), Riboflavin Supplement (Vitamin B-2), Menadione Sodium Bisulfite Complex (Vitamin K), Pyridoxine Hydrochloride (Vitamin B-6), Biotin (Vitamin B-7), Vitamin D-3 Supplement], Preserved With Mixed Tocopherols. B277825 Show full list
Limited ingredient No No
Marketed benefits Skin coat health, Antioxidant support, Digestive health, Probiotic support Skin coat health, Joint care, High energy
Format & suitability
Food type Dry Dry
Texture Kibble Kibble
Processing Not listed Freeze Dried
Life stage All Life Stages Adult
Breed size All Breed Sizes All Breed Sizes
AAFCO nutritional adequacy
Complete & balanced Whether the manufacturer's label claims the food meets AAFCO nutrient profiles for a life stage. Not an independent test.
Yes Not indicated
Life stages All Life Stages, Large Breed Growth (70+ lbs) Not listed
Substantiation How adequacy was established. Feeding trials are the higher bar; formulation means the recipe is calculated to meet the profile.
Formulation Not listed
Maker standards
WSAVA guidelines The World Small Animal Veterinary Association publishes criteria for evaluating a manufacturer: qualified nutritionists on staff, feeding trials, and published research. It does not certify or endorse brands.
No No
PSC accredited The Pet Sustainability Coalition is a nonprofit that accredits pet companies on their environmental and social impact through third-party verification. It reflects sustainability practices, not food quality.
No No
Recalls & where to buy
Recalls on record We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
None None
Where to buy
Amazon
Shop Chewy Amazon

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Shared ingredients

Both foods list these among their top ingredients, by label weight.

  • Salmon
  • Sweet Potato
  • Potato
  • Pea
  • Mixed Tocopherol

Not sure which is right for your pet?

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Common Questions

Which food scores higher on KibbleLab?

Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food scores higher, 9.3 to 8.3 out of 10. Scores reflect published veterinary science.

Do these two foods share ingredients?

Yes. They share these top ingredients: Salmon, Sweet Potato, Potato, Pea, Mixed Tocopherol.

Are both foods AAFCO complete and balanced?

Kirkland Signature Nature's Domain Salmon & Sweet Potato Formula Dry Dog Food is labeled complete and balanced; Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food does not list an AAFCO status.

See the full profiles: Kirkland Signature Nature's Domain Salmon & Sweet Potato Formula Dry Dog Food and Merrick Backcountry Raw Infused Pacific Catch Grain Free Dry Dog Food .

KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.

This is a neutral, factual comparison, not a ranking or an endorsement of either product. A food's guaranteed analysis gives legal minimums and maximums for a few nutrients, not measured values. No one can pay for placement or a higher score.

Product details are compiled from public sources and may not reflect the latest formulation. Represent one of these brands? Request a correction. Anyone else can email us.