This is why I have to keep my cats and mice separated. Once I had some mice on the loose and I came home to find two of my cats with mice in their mouths. I didn't have to worry about those mice again. Since the cats were taking their time eating the mice and trying to eat them on my CARPET, I let the ferrets have them. The cat's haven't had a chance to hunt mice since then but I have offered them pinkies before. They don't seem as interested if its not moving around much.