Purina Pro Plan Large Breed for Adult Dogs Chicken Rice Keep your large breed dog healthy and happy when you feed him Purina Pro Plan Brand Dog Food Large Breed Chicken and Rice Formula adult dry dog food. Real chicken as the first ingredient helps provide protein an essential nutritional building block within your dog s body. Plus this highly digestible dog food formula promotes nutrient bioavailability to support optimal nutrient absorption. With 26 percent protein and 12 percent fat in every serving this large dog food formula helps to maintain his ideal body condition.