I didnt mean to come across cross.. but my main point is that these cats are meant to be outdoors, as well as indoors. They love the mixture between being active outside and resting inside. I can't keep these cats indoors only - thats not what they want nor what the vet recommends. I do see the problem of them ruining other wildlife, however, I can't limit them to being indoors either. I love birds and wildlife myself, and at the cabin we have loooads of bird feeders and bird boxes setup, which is a very enjoyable sight all-year round. While I do, and will continue to let my cats outdoors, I try do my part for a better wildlife other places. Not perfect, but something.