Some creatures gain the state of frenzied when they lose a certain number of LP in a fight. A frenzied monster or animal receives bonuses and penalties to its stats as listed in its description. Frenzied ends when the creature’s opponent dies, a certain amount of time passes, or the requirements for escape are met (such as losing a certain number of LP). DO NOT confuse the state of frenzied with the state of bloodlust or the disadvantage Frenzy.
Aventurian Bestiary, page 121