Purina Pro Plan Sport Performance 30/20 Beef & Bison Formula Dry Dog Food gives dogs the fine-tuned nutrition they need and deserve. This novel, high-protein dog food provides concentrated nutrition to help optimize oxygen metabolism for increased endurance. Plus, this real beef dog food features high-quality beef as the number one ingredient and real, high-quality bison. And, this formula boasts a ratio of 30 percent protein and 20 percent fat to help maintain energy and fuel metabolic needs at all stages of life. Live probiotics help aid digestive and immune health, and Omega-6 fatty acids and Vitamin A help nourish the skin and coat. It has amino acids to nourish and recover muscles including in the critical time after exercise, while EPA and glucosamine also help with joint health and mobility. The antioxidant-rich formula offers 100 percent complete and balanced nutrition, helping nourish their canine immune system. And as the official sport dog food of Ducks Unlimited, you can feel assured you’re offering your champion exceptional nutrition with every serving.