10 Best Costco Brand Dog Foods 2026 in the United States

The Kirkland Signature Adult Formula Chicken, Rice and Vegetable Dog Food is designed specifically for adult dogs and features fresh chicken as its main ingredient, which is beneficial since chicken and egg proteins are easy for dogs to digest. It includes added glucosamine and chondroitin, supporting joint health, especially for dogs that might need extra care in this area. This formula also contains antioxidants like vitamin E, selenium, and zinc to help maintain a healthy immune system, along with omega-3 and omega-6 fatty acids that promote a shiny coat and overall well-being.

The food provides a balanced approach to nutrition, suited for all breed sizes, and is intended for everyday adult dogs rather than puppies or seniors. The 40-pound bag size is practical for larger households or those who want to buy in bulk from Costco. It is not specifically tailored for dogs with allergies or special medical requirements, but it offers reliable nutrition for general adult dog care.

Kirkland Signature is a well-known Costco brand with a solid reputation for quality at a good price, making this an attractive choice for dog owners who want dependable nutrition without a premium cost. If you’re looking for a straightforward, wholesome adult dog food that covers essentials like protein, joint support, and coat health, this product meets those needs effectively.

Kirkland Signature Nature's Domain Beef Meal & Sweet Potato Dog Food is a grain-free option that offers balanced nutrition for dogs of all life stages. The primary ingredients include beef meal and sweet potato, which provide a good source of protein and carbohydrates, respectively. This formula also includes a blend of omega fatty acids to support healthy skin and coat, as well as antioxidants like vitamin E and selenium to promote overall health.

Additionally, the inclusion of dried chicory root as a natural prebiotic helps maintain a healthy digestive system, making it suitable for dogs with sensitive stomachs. With a protein content suitable for active dogs and a well-rounded nutritional profile, this product is ideal for maintaining an active lifestyle and supporting skin and coat health.

While this dog food is suitable for all breeds and life stages, pet owners should monitor their dog's specific dietary needs and adjust feeding amounts as necessary. The grain-free aspect may not be suitable for all dogs, especially those that require grains in their diet. Additionally, while the product is marketed for all life stages, puppies or senior dogs with specific dietary needs might require more tailored nutrition. Kirkland Signature Nature's Domain is a solid choice for dog owners looking for a nutritious, cost-effective option for their pets.

The Exclusive Signature Healthy Weight Adult Dog Chicken & Brown Rice Formula Comfort Care dog food appears to be a well-rounded option for adult dogs, especially those needing weight management. With 31% less fat compared to the regular formula, this product aims to help dogs maintain a healthy weight. The primary ingredient is savory chicken, which provides high-quality protein essential for lean muscles, a strong immune system, and bone development. Additionally, the inclusion of glucosamine and chondroitin supports joint health, making it beneficial for older dogs or those with joint issues.

The formula also contains wholesome grains like brown rice and oatmeal, providing necessary carbohydrates for energy. Antioxidant-rich ingredients such as vitamins E & C, blueberries, and cranberries help support a strong immune system, which is crucial for overall health. In terms of drawbacks, the food is tailored specifically for adult dogs, so it may not be suitable for puppies or senior dogs with different dietary needs. Moreover, the 30-pound bag might be heavy and less convenient for some pet owners to handle.

Pet owners looking to manage their dog’s weight while ensuring balanced nutrition might find this product beneficial. However, those with dogs requiring specific dietary adjustments should consult a veterinarian.