Mohocks
A human street gang, made up of young boys (average age ~11). One of the nastier bands of young killers in the Ankh-Morpork slums, although that didn't stop Carrot from conscripting them into his "Wolf Pack" for a game of football in Jingo.
Sworn blood enemies of the Skats, except when Carrot's enthusiastic coaching leaves both gangs too embarrassed to fight.