Scorpions. We always had them in AZ. There are three kinds there, the smaller, the more venomous. One night, I went to refill the dry cat food dish and there, sprawled across the dry cat food was one huge dead giant desert hairy scorpion. I have a photo of him next to a rule: just under 6 inches.
The way I see it, one of the cats had come through the "cat widow" with the scorpion in his mouth and stopped to have a nosh. (I had a "cat run", an enclosed area they could access at will. I lived in rattlesnake/coyote country but they were safe and I didn't have to deal with a litter box.
A decision had to be made - scorpion or food. Scorpion - food.
The cat chose food and left the body there.
Another time, laying in bed late at night, reading and listening to foster kittens playing, scrabbling around on the floor. I leaned over and found one of these -
quite dead.
Yeesh. It's bite could have killed a kitten.
Note that these are not my photos.
I kept these bodies - and others - in my freezer for a long time and made them part of my school education program. I finally had to throw them out ...