Our older girl, Tasha, is the huntress and her son, Bob, who is 2, helps out. They are very good at rodents in general. The huntress is skillful at killing mice and I got to watch her in action when we camped in the high Nevada Great Basin area for three months a few years ago. The camp ground was infested with mice and I caught literally dozens each night in a water trap. But Tasha would hunt them down in the trailer and kill them. I have never seen her eat them though. I think its instinctive and would not discourage it.