“In mythology, folklore and speculative fiction, shapeshifting, or metamorphosis is the ability of an entity to physically transform into another being or form. This is usually achieved through an inherent faculty of a mythological creature, divine intervention, or the use of magic spells or talismans.
The most common form of shapeshifting myths is that of therianthropy, which is the transformation of a human being into an animal or conversely, of an animal into human form. Legends allow for transformations into plants and objects, and the assumption of another human countenance (e.g. fair to ugly).”