Eukanuba Premium Performance 30/20 Sport (Dry, 40 lb): A high-protein, high-fat dry food formulated for sporting and working adult dogs to reach peak performance. With 30% protein and 20% fat from animal sources, it provides essential amino acids for strong, oxygenated muscles. This diet includes glucosamine, chondroitin, and EPA for healthy joints, an enhanced fiber-prebiotic blend for digestive support, and a tailored antioxidant cocktail (with DHA and vitamins C & E) to support brain function and help active dogs recover quickly after intense exercise.