That's also why cats "play" with their prey. They're not being sadistic; they're tiring it out so they can safely make a killing bite, so they can safely eat it. When your food can bite back, it behooves you to kill it first, so it can't hurt you. Which matters when your ancestors (and potentially you if you're feral) were both predator and prey.

when you are being bitten to death, it is difficult to discern if you are being eaten by biting or just bitten by biting. this point goes to GP