mous·er /ˈmaʊsɚ/ 捕鼠動物,鬼鬼祟祟搜尋的人
Mous·er n. 1. A cat that catches mice; as, a good mouser is better than a dozen mousetraps. 2. One who pries about on the lookout for something. ◄ ►
mouser n : a cat proficient at mousing