Native werewolves in X-Files

A good summary of an X-Files episode from a blog on Dana Scully:

List of MOTW charactersLyle Parker, played by Ty Miller in the episode Shapes (The X-Files). He was a man who was attacked by what appeared to be a werewolf on his family's ranch near an indian reservation in Montana. His father shoots the animal only to find a dead native american upon closer inspection. The son survived the attack only to fall victim to lycanthropy himself leading him to kill his father when the change later overcomes him. Mulder comes to believe the "skinwalker" legend as described to him by the local shaman and later shoots and kills the beast when he and Scully are attacked back at the ranch.