Case in point, here is Ulf, the werewolves’ leader.
He is a mercenary hired by the Witcher to keep guard and hunt fugitives and he decided to stay in the Bayou and turn an handful of people into werewolves.
Next to him is Whisper, who like Sad, can’t talk out-loud, mainly because Ulf, the sadist he is, bite him across his throat, crushing his larynx and vocal chord.