pusher dog

例句：

1. 1. The pusher dog was a great help to the police.
   这个推狗对警察的帮助很大。
2. 2. The pusher dog was very aggressive and scared the people around.
   这个推狗非常凶猛，吓到了周围的人。
3. 3. The pusher dog was trained to be a service animal for the blind.
   这个推狗被训练成盲人服务动物。