First of all, it is necessary to rule out whether the ground in its activity environment is too slippery. Many people have dogs at home, and the floor is covered with tiles and bright wooden floors. Actually, this is not suitable for dogs. It is best to add short-haired carpets or unsmooth wooden floors to its activity area, take it to the grass, mud or sand for running, get more sunshine, and then make scientific calcium supplementation. It will be normal after a while.