Hill's(R) Science Diet(R) Adult Healthy Mobility(TM) dog food provides precisely balanced, easy-to-digest nutrition to improve mobility & joint health. The natural sources of glucosamine & chondroitin help provide healthy joints while the L-carnitine and calcium support strong bones and healthy muscles. | Hill's Science Diet Healthy Mobility, Chicken Meal, Brown Rice and Barley Recipe, Large Breed, Adult Dry Dog Food | Size 30 lbs