So last night was exciting -- I was up late reading, and the cats suddenly began knocking things over and banging into doors in the hallway.
I went to see what was up and they had a mouse cornered. I said several bad words and went to get a bowl to put over it, except when I got back it had run behind a bookcase. They sat watching the exits (one cat on one end and one on the other) for about an hour, while I twitched nervously.
Eventually, exhausted, the mouse crept out and just sat there, tharn, while the cats sat studying it. (A motionless mouse apparently does not trigger their prey reflex.) I gingerly put the bowl over it, slid an empty file folder under the bowl, and carried it out to release it in the wild.
The wild was 14 degrees and snowy last night, which I assume is why the mouse came inside. So I'm not sure this was a kindness.
Better than letting the cats bat it around for hours, though, I guess.