Werewolves

In folklore, a werewolf (Old English: werwulf, "man-wolf"), or occasionally lycanthrope (Greek: λυκάνθρωπος, "wolf-person"), is a human with the ability to shapeshift into a wolf (or, especially in modern film, a therianthropic hybrid wolflike creature), either purposely or after being placed under a curse or affliction (often a bite or scratch from another werewolf) with the transformations occurring on the night of a full moon.