If the dog's lame leg is not serious and the bones are not injured, it can heal on its own; if the bones are injured or the injury is serious, it will not heal on its own. Therefore, when you find that your dog's leg is lame, you should immediately check whether the dog has any trauma, and then take the dog to the pet hospital to check whether the bones are injured. If the bones are injured, surgery is required. If there is no trauma, there is no injury. If it reaches the bone, then let the dog recover for a few days.