My one cat never liked to hunt. He had never killed anything. But when we got a new kitten, and the kitten started killing everything in sight my older cat got jealous of the attention since we would pet the kitten whenever it came back with something (since they'll do it anyway it's not worth trying to stop them). So one really hot day when my brother and I were outside the older cat came walking up to us with a bird in his mouth. But he was so tired (he was pretty fat) and hot that he opened his mouth to pant. The bird flew right out of his mouth. It didn't even hit the ground he had been so gentle with it. He looked so offended, but we ran over and started petting him, and he looked much happier. He never bothered again.