Since lycical themes are a hobby of mine here are a few rock/metal tunes out of my collection that either are directly about or contain references of werewolves:
Ancient - "Lycanthropy"
Behemoth - "Hidden in a Fog" and "Wolves Guard my Coffin"
The Council - "Wolfmother Wallpaper"
Moonspell - "Wolfshade (A Werewolf Masquerade)"
Six Feet Under - "Lycanthropy"
Rammstein - "Du Riechst So Gut" (You Smell so Good)
Lordi - "Bring it On (The Raging Hounds Return)"
^ I think the song is based on a scandanavian myth about a pack of wolves clearing all the useless people out of the towns every mid-winter.
and of course the most popular
Metallica - "Of Wolf and Man"
There are many more I'm sure, these are just the ones off the top of my head.
"We may be human but we're still animals"
-Steve Vai