Ali

“...of eighteen kittens reared in the company of rodents, only three became rodent-killers later on. The other fifteen could not be trained to kill later by seeing other cats killing. For them the rodents had become 'family' and were no longer 'prey'. Even the three killers would not attack rodents of the same species as the one with which they were reared.”
― Desmond Morris, Catwatching: The Essential Guide To Cat Behaviour