A Thestral, from the Harry Potter series by JK Rowling.
'They were completely fleshless, their black coats clinging to their skeletons, of which every bone was visible. Their heads were dragonish, and their pupil-less eyes white and staring. Wings sprouted from each wither--vast, black leathery wings that looked as though they ought to belong to giant bats. Standing still and quiet in the gathering gloom, the creatures looked eerie and sinister.' --J.K. Rowling, Harry Potter and the Order of the Phoenix, Chapter Ten: Luna Lovegood.