Give your dog all the taste he loves with Purina ONE True Instinct Natural Grain-Free Formula With Real Beef adult dry dog food. With added vitamins, minerals and nutrients, this natural dog food offers 100 percent nutrition and 0 percent fillers. Real beef is the number 1 ingredient in our grain free dog food recipe, and we make it with a wholesome blend of ingredients for complete and balanced nutrition for adult dogs. This high protein dog food formula contains 30 percent protein to help support strong muscles. Natural sources of glucosamine in the high-protein dog food support joint health for dogs, and the crunchy kibble and calcium in our hard dog food help maintain strong teeth and healthy gums. We formulate this recipe without corn, wheat or grains. Our real meat dog food also contains no poultry by-product meal, artificial flavors or preservatives. Feed his natural instincts to seek out nutrient-dense foods when you give him this high quality dog food from a trusted, veterinarian-recommended brand.