Saw one in Montana while hunting Elk in 2016. Hunting buddies pushed a little patch of wood while I was overlooking a hillside. Mule deer does move and I see this coal black animal come busting out, about 2/3 the size of the does, run like hell 350 yards away and duck back into the trees. My mind is like "WTF is that animal, not moving at all like a bear?" Wolf...!!! but in reality I never had a shot, only saw it for a few seconds. But I was very impressed with it size.
Good Luck
Jerry