As with vampires, there's a sexual element to werewolves. While vampires tend to be smooth and sexually charged, the typical werewolf is hyper-masculine. He is exceptionally muscular, exceptionally hairy and exceptionally violent.
Werewolves are showing up in romantic fiction nearly as much as the vampire.
Is it the wildness of the wolf blending with the human body that attracts us or the fact that a hero or heroine will overcome and withstand the danger and fierceness of such a beast, knowing the one they love is trapped inside the contorted, vicious body of a beast?