ROYAL CANIN Canine Mobility Support Dry - Large Breed (26.4 lb) by RCVD Added omega-3 fatty acids to nourish joint cartilage. Increased concentrations of green mussel extract over the original mobility support formula, to meet the increased demand of a large dog's joints Chelated minerals for easy digestion and absorption by your dog's system Kibble that is scientifically designed for larger dogs Blend of nutrients that support digestive health in your pet