1·These strong-eyed dogs have been bred to work in this style. They have also been bred for working temperament, to be biddable working for and with their handler.
人们繁殖S的狗就是为了让它们能以这种方式工作，也为了它们能具有有利工作的良好的性格，顺从，并且听从主人的指令。