The Hill’s Science Diet Adult Large Breed Chicken & Barley Recipe is a high-quality dry food that is perfect for big dogs. This food provides natural sources of glucosamine and chondroitin to support joint health and mobility, as well as an exclusive blend of omega-6 fatty acids, vitamins, and other nutrients to nourish the skin and promote a shiny coat in 30 days. The Hill’s Science Diet Adult Large Breed Chicken & Barley Recipe is also clinically proven to support a healthy immune system with a blend of antioxidants.