Support your large breed dog's active lifestyle with Hill's Science Diet Adult Healthy Mobility Large Breed Chicken Meal, Barley & Brown Rice Recipe dry dog food. Formulated with advanced nutrition to promote hip and joint health from day one, this recipe includes EPA from fish oil to help maintain healthy joint cartilage and support improved mobility. Natural sources of glucosamine and chondroitin provide essential building blocks for healthy cartilage and long-term joint support.