I have a 16 month old female. Recently she began hunting birds and mice and bringing the dead, intact animal back and leaving it on the deck. She doesn’t play with it and fortunately doesn’t eat it. She just loses interest in it and never brings it inside. None of my past dogs have done this. Cat owners have told me of this and speculate their cat is bringing them a gift.  I am unwilling to accept their explanation just because it gives them the warm fuzzies. The opinions of Terv  owners will be more relevant.