When I was young(er) we had a large Tonkinese called Taica (Tie-sa) who would routinely bring home fully grown rabbits and ducks. We lived on a farm in New Zealand and he would drag these critters home, through the cat door, and leave them live and healthy under Mum's bed. Despite it being "the thought that counts" Mum never seemed too appreciative

I still don't know how he managed to get a fully grown duck from the wild all the way home and through the normal size cat door without harming them...