When the earliest recorded sheepdog trial took place at Bala, Wales, in 1873, the crowd was astonished that the Border Collies were able to herd sheep into a small pen, guided only by hand signals and whistles from their owners.

1873 年， 当最早记录的牧羊犬试验在威尔士巴拉举行时， 人群惊讶地发现边境牧羊犬能够将绵羊放牧到一个小围栏中，仅靠主人的手势和口哨引导。