sheep dog 牧羊犬；牧羊狗

【例句】
What if he had a sheep dog, and it slept on the end of his bed?
如果他养了条牧羊犬，然后一直和他睡一起呢？

Gabriel was having difficulty training this young dog, which, although enthusiastic, still did not understand a sheep dog's duties.
盖伯瑞尔一直未能把这条小狗训练出来。它很有热情，但不懂得一个牧羊犬的职责。