Jeff is a large orange tomcat that lives and kills in Shadow Hills, CA.WhatJeffKilled.com: About Jeff
Jeff has adopted our back porch and yard as his home. He uses our dog's house when it rains, but mostly he likes to sleep on our patio chairs and keep watch over his domain.
Though he doesn't really belong to us, we provide Jeff with food and water; however, this does little to lessen his killer instinct. To humans, Jeff is an exceptionally good-tempered and friendly cat; to rodents and other small animals, he is death itself.
It could be that Jeff likes to bring us gifts to repay our hospitality. Perhaps he is simply a hardwired killing machine. All we know for certain is that he hunts down a wide variety of small animals and disembowels, decapitates, and dines on them. Often.
Hat tip: J-Walk via Chap.