The American Veterinary Medical Association recommends that the surgery only be done "after behavioral modification efforts to correct excessive vocalization have failed."
美国兽医协会建议手术只有在证明狗狗过度大叫的情况下才可以进行。
2
He said professors there do not teach the surgery, and that he has not come across recent veterinary school graduates who have studied the procedure.
教授们不再教这种手术，并且他并没有发现近年来的医学院毕业生有人学过这种手术。
3
Surgery is also a popular remedy, with veterinary surgeons removing abnormal tissue and closing any connections to the spine, although in some cases, regrowth of the sinus occurs.