Generally speaking, the method that is least harmful to the dog is to use sterilized thread or rubber bands to tie 1-2 tail bones from the root within 2-4 days of the dog's birth, so that the remaining tail can move on its own. Shedding, if it has been dozens of days or months since birth, it is not recommended to dock the tail. If you really want to dock the tail, you can only go to a regular pet hospital and ask the doctor to use anesthesia to dock the tail. However, this will cause greater harm to the dog, and the wound will not heal well. It will also cause the dog to lose fur and affect its appearance. .