http://www.dfw.state.or.us/wildlife/.../integrity.asp

If you scroll down to the bottom and click on Mammals, it gives you a list of all the mammals in OR that are controlled, non controlled and prohibited. Non controlled means no one cares diddly squat if you have it, controlled means you must posses a permit, and prohibited means they are illegal. Even though some animals may not be prohibited though, for instance servals, you still could need another permit if they are endangered, as in a CITES permit.