Intensely territorial, they would not range out of their jungle territories unless food became scarce. Blood was their primary and preferred form of nutrition, but when times got lean, they would eat the flesh of their victims as well. Uvag-aak were very protective of their own and would exact a horrible vengeance on any who dared to kill one of their kind, making sure that the blood-drained corpses of their victims were placed where other would-be uvag-aak exterminators could see them.