Real beef is the number 1 ingredient in this high protein dog food, which supplies 32 percent protein for strong muscles, including a healthy heart Purina ONE natural dog food made with protein-rich beef bone broth for dogs, added vitamins, minerals, and nutrients crafted by a veterinarian-recommended brand in Purina-owned, U.S. facilities 100 percent nutrition for adult dogs with 0 percent fillers or animal by-product so that every ingredient in this dry Purina ONE dog food has a purpose Dog kibble including omega-6 fatty acids for healthy skin and coat, natural sources of glucosamine to help support joint health for dogs and bone broth, a naturally-occurring source of collagen High quality adult dog food featuring 2x the tender morsels compared to Purina ONE Lamb and Rice Formula adult dog food