You don't go around just mauling everyone in your path! Only the ones who challenge your perceived place! Jack does not give off the sort of vibes that say "I'm here to fight you for your position" at least. I feel like werewolves might have a good understanding of jockeying around in a pack too.

please handle all the talking, this man does not know how to socialize in spite of angeal and genesis' best efforts for ten years