HSD Adult Healthy Mobility™ Lrg Brd 30lbsHill's Science Diet Adult Healthy Mobility Large Breed 30lbs Large 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