Fearsome reptilian creatures bred by Morgoth during the First Age as weapons of war. The first and greatest was Glaurung, the Father of Dragons, and the most powerful was Ancalagon the Black, whose fall broke the towers of Thangorodrim. Dragons hoard treasure and possess cunning intelligence. Smaug, the last of the great fire-drakes, occupies Erebor until slain by Bard the Bowman.