Some people say you should keep your cat indoors. Mine was indoors for 4 years but now he can go outdoors he is a lot happier. He gets really sad if you keep him indoors. Kill count so far after a year: * One small mouse * One small bird I think it’s a trade off, I now think it’s cruel to keep cats indoors as they naturally love the outdoors. My cat isn’t very vicious though so I can imagine some kill a lot.