Hill's Science Diet High Energy dog food provides your hunting and hard-working dog with maximum stamina and recovery for peak performance and endurance. Its optimal blend of highly digestible protein, fat & carbs helps to maintain lean muscle and minimize muscle burn, meets demanding energy needs and provides nourishment for a highly active lifestyle. The highest guaranteed levels of natural glucosamine & chondroitin* support and maintain healthy joints. Clinically proven antioxidants promote a healthy immune system. And, it tastes great -- Guaranteed! You can be confident your dog will have all the energy needed to reach maximum potential and recover quickly so you can both continue to enjoy your exciting, hardworking days.