Abundant Wildlife Society of North America documents wolf attacks on humans. One incident went as follows:
In August, 1996, the Delventhal family of Pittsburgh, Pennsylvania, were spending a nine-day family vacation in Algonquin Provincial Park in Ontario, Canada and joined a group of Scouts in "howling" at the wolves. They were answered by the howl of a solitary wolf.
That night the Delventhals decided to sleep out under the stars. Young Zachariah was dreaming when he suddenly felt excruciating pain in his face. A lone wolf had bit him in the face and was dragging him from his sleeping bag. Zach screamed and Tracy, Zach's Mother, raced to his side and picked him up, saturating her thermal shirt with blood from Zach's wounds.
The wolf stood menacingly less than a yard away. Tracy yelled at her husband, Thom, who leapt from his sleeping bag and charged the wolf. The wolf retreated and then charged at Tracy and Zach. The charges were repeated. Finally the wolf left. Thom turned a flashlight on 11-year-old Zach and gasped "Oh, my God!" "The boy's face had been ripped open. His nose was crushed. Parts of his mouth and right cheek were torn and dangling. Blood gushed from puncture wounds below his eyes, and the lower part of his right ear was missing." Zach was taken to a hospital in Toronto where a plastic surgeon performed four hours of reconstructive surgery. Zach received more than 80 stitches in his face.
Canadian officials baited the Delventhals' campsite and captured and destroyed a 60-lb wild male wolf. No further attacks have occurred since.
WOLF ATTACKS ON HUMANS [Abundant Wildlife Society]