Razac

Fast as an arrow loosed from a bow, the second Lethrblaka darted out of the lancet passageway, pounced upon Saphira’s flank, and, opening its narrow beak, uttered a horrible, withering shriek that made Eragon’s scalp prickle and a cold lump of dread form in his gut. He snarled in discomfort; that he could hear.

Assault on Helgrind, Brisingr pg 47