Purina Pro Plan Performance 30/20 for Dogs of All Ages Chicken Rice Provide your dog fine-tuned nutrition when you fill his bowl with Purina Pro Plan Brand Dog Food PERFORMANCE 30/20 Chicken and Rice Formula dry dog food. Designed for highly active dogs this high-protein dry dog food appeals to owners of sporting dogs cattle dogs hunting dogs and competitive canine athletes. The formula concentrates nutrition in ways that help optimize oxygen metabolism for increased endurance and contains a blend of 30 percent protein and 20 percent fat to assist in caring for your dog s metabolic needs and help him maintain lean strong muscles.