After a dog is hit by a car on its hind legs, it is best to send the dog to the pet hospital for examination and take X-rays immediately to see if there are any fractures, etc., and to treat it promptly to avoid causing disability to the dog, and the dog’s hind legs need to be fixed. Do not let the dog walk to avoid secondary injuries. If a fracture occurs, it must be treated aggressively, so that the hope of recovery is greater.