“I had to reach behind me and jerk my head out of its mouth,” he told the Duluth News Tribune.
Tom Provost, of the state Department of Natural Resources, described the attack as "incredibly normal behavior."
If confirmed by officials, Graham will have survived what could be the first documented wolf attack in the continental U.S. There have been two documented cases of humans being killed by wolves in North America -- in Alaska and Canada.
“I won’t be sleeping outside, again, any time soon,” Graham said. “There was no sound at all; didn’t hear it. It was just all of a sudden there.”
“After I got up, I was kicking at it and screaming at it, and it wouldn’t leave,” he said. “But then after a while I got it to run away.”
Authorities searched for and killed a wolf matching Graham's description. They will use that wolf's DNA to confirm the attack.
2014: The Year in Music [PHOTOS]