When doing this quest do you count each member of the pack for your total number of Giant Ants (so 4 per encounter) or each encounter? My mission is to kill 12 Giant Ants. Does that mean 3 encounters or 12 encounters?

I am playing D100 Dungeon World Builder and I rolled the Werewolf event. It says the monster has frenzy and leap ability. Where can I find those? I currently own Book 1 and 6.