Healthy Mobility Large Breed ChickenLarge breed dogs can be prone to joint issues. Hill's Science Diet Healthy Mobility Large Breed dry dog food contains advanced nutrition shown to support healthy joints & improve mobility in 30 days. Using natural sources of glucosamine & chondroitin the building blocks of healthy cartilage this adult dog food supports the joints, while a balanced set of minerals promote strong bones. High quality protein & natural fibers keep your large dog satisfied