the mare is a female shape-shifting demon from germanic folklore who torments her victims while they sleep. during the day, she appears as a normal woman, disguising herself as someone’s mother, wife, or a local shopkeeper. a mare can easily enter her victims’ homes through keyholes or the smallest cracks in the wall. when she finds a victim, she mounts their chest causing pains, tightness, troubled breathing, and horrible dreams. if she cannot find a human, the mare will prey on animals instead.