A high level of protein helps build and maintain strong muscles. The large breed dogs are susceptible to become over weight, and consequently are at high risk of developing disorders related to bone and mobility. Green lipped mussel and controlled calcium to phosphorus ratio promote the development of robust bones and joints. There are prebiotics which help to maintain the health of digestive tract at an optimum level. Immunity of the growing canine gets a boost with the addition of antioxidants.