Antherions are animals who are able to transform into humanoids or humanoid/animal hybrids. Unlike therianthropes, who are humans or nonhumans that are able to shapeshift due to a curse, antherions are a distinct species. Some of them, however, reproduce similarly to cursed creatures – aguaras, for example, are said to be created through the transformation of abducted elven girls.[2]
Note that antherions should not be confused with polymorphism, which is a rare magical ability that both humanoid and non-humanoid creatures may possess.