Warning wasn’t needed in the past because presence of wolves was unknown-
North Cascade signs warn hunters not to shoot wolves. AP. Seattle Times. “With deer hunting season opening Saturday, the state is putting up signs in the Methow Valley to warn hunters that federally protected wolves may be in the area and should not be killed.”
Folks may recall that the first verified wolf pack in Washington State was found this year near Twisp. It is closely monitored. There may be other wolves in NE Washington.