PP SPORT PRFMC 30/20 DOG 50#High protein dry dog food formula, with real chicken as the first ingredient and concentrated nutrition to optimize oxygen metabolism (VO2 Max) for increased endurance Amino acids nourish muscles, including the crucial time after youve given your dog exercise 30 percent protein and 20 percent fat fuel metabolic needs and maintain lean muscle, while EPA, an omega 3 fatty acid, and glucosamine for dogs help support joint health and mobility This Purina