There are no werewolves on Tiria, but there is a Formædren that chose the likeness of a wolf during Illidor's Scourge. But the Wolf Formædren was the inspiration for other elves to do the same, and after many years they became known as "werewolves," though it was a power that they could control rather than a curse that they could not.
look mom! a furry! by nebezial on deviantART ((look what followed me home tonight! Mommy, can I keep it?))