Completly agree with RATTER. We have a cat that is always bringing live animals back to show us, mice, shrews, moles, baby rabbits etc.
But she is so quick, in the last two years she has only lost one live one in the house, it must have been injured and crawled under a bed in the spare bedroom to die, we only found the body because the bedroom was full of flies one day and we realised what had happened. Another one survived a week in the house, it had a store of the cats food under a cupboard in another room but the cat got that one in the end.
Our cat always eats the mice after a little play with them, also the rabbits but never the shrews or moles she always brings them back dead.
I am getting a bit worried about the sheep in the field next door.