A werewolf, also known as a lycanthrope (from the Greek λυκάνθρωπος: λύκος, lykos, "wolf", and ἄνθρωπος, anthrōpos, "man"), is a mythological or folkloric human with the ability to shapeshift into a wolf or a therianthropic hybrid wolf-like creature, either purposely or after being placed under a curse or affliction (e.g. via a bite or scratch from another werewolf). Early sources for belief in lycanthropy are Petronius and Gervase of Tilbury. The werewolf is a widespread concept in European folklore, existing in many variants which are related by a common development of a Christian interpretation of underlying Indo-European mythology which developed during the medieval period. From the early modern period, werewolf beliefs also spread to the New World with colonialism. Belief in werewolf develops parallel to the belief in witches, in the course of the Late Middle Ages and the Early Modern period. Like the witchcraft trials as a whole, the trial of supposed w...