Kirkland (Costco) Dog Food Review (2026): Is It Worth It?
Quick Verdict: 7.9/10 — The best dollar-for-dollar dog food value—Costco’s house brand provides excellent nutrition at unmatched pricing.
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Company Overview
Founded: 2001 | Parent Company: Costco Wholesale (made by Diamond Pet Foods) | Price Range: ~$40–$50 per 40 lb bag
Kirkland Signature dog food is Costco’s house brand, manufactured by Diamond Pet Foods. It’s available only to Costco members. The Kirkland Signature line (chicken & rice, lamb & rice) and Nature’s Domain grain-free line represent outstanding value—often comparable in nutritional quality to brands costing 2x as much. For value-focused owners of healthy adult dogs, Kirkland is one of the most recommended options.
Product Lineup
| Product | Size | Price (approx.) |
|---|---|---|
| Chicken, Rice & Vegetable Adult | 40 lb | ~$43 |
| Lamb, Rice & Vegetable Adult | 40 lb | ~$43 |
| Nature’s Domain Salmon & Sweet Potato (GF) | 35 lb | ~$48 |
| Puppy Formula | 40 lb | ~$45 |
| Nature’s Domain Turkey Meal & Sweet Potato | 35 lb | ~$48 |
Ingredient Analysis
Primary Ingredients (Chicken, Rice & Vegetable): Chicken meal, whole grain corn, grain sorghum, chicken fat, dried whole egg, flaxseed, dried beet pulp.
Chicken meal is a high-protein, concentrated ingredient. Whole grain corn is the primary carbohydrate—functional but grain-inclusive. No artificial preservatives, colors, or flavors. Nature’s Domain (salmon & sweet potato) is grain-free with higher protein.
Nutritional Profile
| Nutrient | Amount |
|---|---|
| Crude Protein (min) | 27% |
| Crude Fat (min) | 16% |
| Crude Fiber (max) | 4% |
| Moisture (max) | 10% |
| Calories (kcal/cup) | ~380 |
Pros
- Exceptional value—best price/quality in the market
- 27% protein and 16% fat—matches mid-premium brands
- No artificial preservatives, colors, or flavors
- Available in large 40 lb bags
Cons
- Requires Costco membership
- Made by Diamond Pet Foods (recall history)
- Whole grain corn as primary carbohydrate (not grain-free)
Best For
Costco members with healthy adult dogs who want maximum nutritional value for the lowest possible price. One of the best value recommendations in the entire dog food market.
Alternatives
- [Kirkland vs Purina Pro Plan](/compare/kirkland-vs-purina-pro-plan)
- [Kirkland vs Blue Buffalo](/compare/kirkland-vs-blue-buffalo)
- [4Health Review](/reviews/review-4health)
FAQ
Who makes Kirkland dog food?
Diamond Pet Foods, under contract for Costco. Diamond also makes Taste of the Wild and Diamond Naturals.
Is Kirkland Nature’s Domain safe?
Kirkland Nature’s Domain is grain-free. The FDA DCM investigation broadly flagged grain-free foods. No specific safety issues have been identified for Nature’s Domain.
Can I buy Kirkland dog food online without a membership?
Costco.com allows non-member purchases with a 5% surcharge. In-store requires membership.
Is Kirkland as good as Purina Pro Plan?
Pro Plan has live probiotics, higher caloric density, and more specialty formulas. For healthy adult dogs, Kirkland provides comparable everyday nutrition at about half the price.
What size options does Kirkland come in?
Kirkland dog food comes in 40 lb and 35 lb bags—large bulk sizes. Not available in smaller sizes.
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