Death Of Meraxes

"[...] As Meraxes banked above the Hellholt, a defender atop the castle’s highest tower triggered a scorpion, and a yard-long iron bolt caught the queen’s dragon in the right eye. Meraxes did not die at once, but came crashing to earth in mortal agony, destroying the tower and a large section of the Hellholt’s curtain wall in her death throes. Whether Rhaenys Targaryen outlived her dragon remains a matter of dispute."
- Fire and Blood, George R.R. Martin