Wow, thanks for the input guys! XD I like BattleShovel and Noyuri's ideas...those seem like they could easily be put together.

[quote=Noyuri]
I would say, we need to hunt (question: hunt what exactly?)
[/quote]

Squirrels, deer, ect. Skinwalkers tend to have a problem similar to housecats where they don't necessarily need to hunt to survive, but if they don't they get restless and aggressive, so it's a means of expending extra energy.