Wolf Blood: A Tale of the Forest is a 1925 silent horror film. The earliest surviving werewolf film, it takes place against the background of rival Canadian lumber interests and a love triangle.
Reviews are few, but it's worth seeing for its historical value alone; and it's a decent movie, with an unusual setting, clear and well-developed characterization, and a plot that moves along nicely and which includes several interesting sub-plots. And it's just an hour long. Honestly, you can't go wrong with this.