one of my cats killed a mouse once. we've always chalked up the murder to billie, but really, it could've been either of them. especially since after the cat killed it, they both sat back 4 feet from the thing & stared at it in the middle of the kitchen floor until nick & i discovered what they were doing. thank goodness for no surprises. although, i should start shaking out my boots before putting them on, just in case.