My mother told me once that when she went to the Farmer's Market, she was chatting to one of the people who sold eggs and he had some chickens, and suddenly the chickens went crazy, clucking and chasing something on the ground. One of them tossed it up in the air, and mom saw it was a mouse, and then they tossed it up again, and one of the chickens swallowed it whole('course, since they don't really have teeth, that's kinda how they'd have to eat it, huh?). So yeah. Mice. They is delicious, apparently.

The cat won't eat them because cats are picky, picky eaters. One of our cats actually stopped eating when my mom changed our brand of cat food. -___-' It's completely ridiculous.