Oh, Mighty Hunting Cat, it is 2-freaking-30 A. M.!
I was comfy in bed, in that state of not really awake, but neither asleep, when I heard "Sproing" from outside on the cat patio. It was the sound of a cat bouncing off the fence of the cat patio. I knew what was to come next, and, sure enough, next came "Thud. Crash. Flapppppp." This was the sound of a cat blasting into the house through the cat flap. Then came the "Yowwwl. YOWL!" as he called me to come and admire him and his catch. I got up, turned on a light, and admired him and his caught mouse. While I am always glad when he catches a rodent coming into or out of the house, I did wish it was not 2:30 in the morning. He then proceeded to play with it for nearly 1/2 hour.
A while back, I read in a book that domestic cats play with their catch because they are not hungry enough to eat it. They have the instinct to hunt, but not the hunger to turn off the hunt instinct and eat it. So they continue to hunt what they have already caught. And that is why they often do not eat it at all or eat only choice parts.
The Mighty Hunting Cat often does not eat his catch. And when he does eat all or part of it, he usually barfs it back up shortly afterwards.
I did get back to sleep, finally, with one less rodent living under the house.