Here's my idea: buy feeder mice that you use for snakes from wherever for the purpose of giving my cat something to hunt and kill. The storebought ones should be disease free unlike wild mice. Im sure some people would think thats weird and cruel, but I dont. Cats would naturally predate on mice in the wild, its not like its unnatural. Im not about to just let him outside (especially since I live in the city), and in a way I think that its cruel not to let him hunt. Cats after all are natures most efficient predator. Ever hear of anyone doing that? I think he'd love it.