Hmmmm...I may have to borrow one or two of them.

Do your cats actually eat the mice or just play with them? Buddy and Tink don't seem to have a clue but Mama is quite the hunter. However, once she gets one she just plays with it, holding it in her mouth, dropping it, batting it, letting it get away! and then we have to search for it. To quote Jinxy cat from the cartoons: "I hate you meeces to pieces!"