Our two adopted strays, Patty and Krissy were really proficient mousers. They used to deposit gifts on the doorstep constantly. A few years ago we had a little field mouse in the house and our three cats Patty, Ginger, and Louis stalked and stalked, and finally caught it. We don't know who actually did the deed. Our previous cat Ella was no mouser. We had a squirrel run in the house once and I was rushing to get a paper bag to try and trap it and put it outside. But before I got the bag it ran right by Ella who just looked at it with very little interest.