Therianthropy

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Therianthropy is the belief that someone is an animal that exists or has existed in the outer world, sometimes in a previous life. Such individuals are referred to as therianthropes, or therians. This belief could be spiritual, psychological, or related to something else.

Related Terms
Otherkin are individuals who identify non-physically as non-human. Therians are under the otherkin umbrella, which itself is under the alterhuman umbrella.

Fictionkin are otherkin who either identify as species from fictional media or as characters from fictional media.

Factkin are otherkin who identify as a person who has existed in the shared reality at some point, either living or dead.