In Russia the wolf population is known to attack humans with some regularity. Last year a village was terrorized by a pack 400 strong that displayed no fear of humans. They were eating horses. When a pack gets too large attack helicopters are used to kill them. Animal size is said to be 7ft and 220 pounds. Photos that I have seen show either shotguns or old MNs in use. Thus the wolf is not always timid and will attack humans.