Lycanthrope
Lycanthropes were shapechangers with at least two forms, that of a humanoid and that of a particular kind of animal. In humanoid form, they appeared no different than a typical specimen of that type and their natural life expectancy was the same. Lycanthropes could disguise themselves somewhat through their shape-shifting abilities, either taking on a form almost identical to a humanoid but with subtle details revealing their true nature such as pointed teeth or long fingernails. Similarly, lycanthropes could assume an animal form, which would be a perfect disguise except for the unusual spark of intelligence in their eyes that sometimes gave them away. Some lycanthropes could also take on an intermediate "hybrid form", superficially resembling their humanoid form but with the head of the specific animal whose shape they could also take.
