Therianthropy

Therianthropy (sometimes stylized as Therianthrope) is a form of advanced Transformation Magic that, in a literal sense of the word, transform into any form of creature or animal.

Etymology
The term "therianthropy" comes from the Greek theríon [θηρίον], meaning "wild animal" or "beast" (implicitly mammalian); and anthrōpos [ἄνθρωπος], meaning "human being".

Overview
Therianthropy is the Transformation Magic that allows one to transform into any form of creature at will, be it a cat from bears and birds. To make it clear, the user literally becomes that race, for Therianthropy completly changes the user's physiology and anatomy, all of the while retaining human intelligence and capacity of speech. Unlike Animal Soul that requires a soul of that animal, Therianthropy is already capable of becoming those animals, and even beasts such as the Vulcan race. Similar to Shapeshifting Magic, Therianthropy also allows access to the creature's magic.

However, Therianthropy only allows full-body transformation, and is incapable of allowing the user to shapeshift into human individuals, demon and most demi-humans.

Trivia & Notes

 * Based on, the mythological ability of human beings to metamorphose into other animals by means of shapeshifting.