Hiya folks

So here is a tricky one...

Several years ago I was browsing Youtube when the service recommended a music video to me. I loved it. The song was fantastic. I went looking for the song, but couldn't find it. Unable to track it down, I left it alone. But every once in a while I think about it, and I finally decided to try a forum.

1) It was definitely in Spanish (maybe Portuguese?)
2) It sounded like a punk-rock song (maybe rock-a-billie?)
3) Instruments--drums, bass guitar, vocals, a very, very distorted guitar and brass horns (trumpet? saxophone?)
4) I think the title of the song is one word
5) The biggest clue comes from the music video. It was animated, and I think it showed someone turning into a werewolf.

Does anyone know what song this is?