shapeshifting

Shapeshifting is a common theme in folklore, as well as in science fiction and fantasy. In its broadest sense, it is a change in the physical form or shape of a person or animal. Other terms include metamorphosis, morphing, transformation, or transmogrification.There is no settled agreement on the terminology. Still, the most common usages are:shapeshifting indicates changes that are temporarymetamorphosis indicates changes that are lastingtransformation indicates changes that are externally imposedTransmogrification suggests either a internally physical, mental, and or somewhat spiritual transformation as makie from Wicked City went through or a horrific (and somewhat asymmetrical) physical transformation as most of makie's fellow demons underwent. Shapeshifting is distinguished from natural processes such as aging or metamorphosis (despite shared use of the term), the body contortions of animals such as the Mimic Octopus, and illusory changes. Instead, shapeshifting involves physical changes such as alterations of age, gender, race, or general appearance or changes between human form and that of an animal, plant, or inanimate object.
See more at Wikipedia.org...