My brother in Christ, werewolves existed for at least 150 years and shape shifting goes back hundreds more. A beast that becomes a person… What could that possibly be for? A person becoming a beast is easy and the not weird part of folk history that didn’t upset any kind of established morals. Violence is a part of life. Hot wolf dick that escapes into the night after making sweaty sheets? More difficult to keep as an oral tradition. Well, in stories at least.