We had a stray show up years ago, pretty grey female and she was pregnant. We made her a warm spot in our basement and propped open the basement window. She had her kittens in the bed provided. We left a large dish of food for her. She has been stray for so long she was an excellent hunter. she caught mice and rats and snakes and even squirrels. One day we looked out and she was walking backwards, dragging something. she was dragging a fresh killed large rabbit. She dragged it into the basement for her 5 kittens. So yes Cats can kill rabbits.