A pavlovian response is a conduct in which you associate two things, and hearing one makes you think of the other. The example Pavlov gave: each time he fed his dog he would ring a bell; after a few times, the dog would salivate each time he heard a bell ringing, thus having a pavlovian response...
@Betony
He couldn't do just that. He had a peculiar face, he had his scar. Wilk was forced to somehow change his face, so he simply removed it. The only peculiar trait left were his eyes, which couldn't be removed. Remember that Wilk had a strong personality, he did not hesitate to kill his...