Ok so I have this cat that has this thing for killing other animals. I know it is just his natural instict, but what can be done about it. He keeps leaving "gifts" for my neighbors and they are getting tired of it. His animals of choice seem to be birds, chipmunks, squirrels, mice, and moles. We put a color on him with a bell hoping to take away the stealthness of the attack, but no luck so far. Any ideas?