Bultungin
Region of origin: Chad
Literally “I change myself into a hyena,” it was believed some people used witchcraft to to turn a hyena, a creature heavily stigmatized as dirty scavengers. The bultungin would turn into the hyena at night and upturn graves to feast on the dead bodies. A similar creature in Ethiopia was known as a bouda, and was heavily associated with blacksmiths.
The Compendium of Arcane Beasts and Critters 