Purina Pro Plan All Ages Sport Performance 30/20 Salmon & Rice Formula Dog Food, 6lbHigh performance dry formula crafted with 30% protein and 20% fat to fuel metabolic needs and maintain lean muscle in canine athletes. Delivers concentrated nutrition to optimize oxygen metabolism (VO2 max) for increased endurance. HIGHLIGHTS: Optimizes oxygen metabolism (VO2 max) Concentrated Nutrition optimizes oxygen metabolism (VO2 MAX) for increased endurance 30% Protein and 20% Fat fuel metabolic needs and maintain lean muscle Amino Acids