A Colorado jogger fought off a cougar in the foothills of Horsetooth Mountain on Monday, suffering severe bites before he killed the wild animal in self-defence, authorities said. The man, who was not identified, was jogging on a trail on the West Ridge of the Horsetooth Mountain Open Space, a mountain park about 66 miles northwest of Denver, officials said. A juvenile cougar attacked him from behind, biting and clawing the man's face, back, legs and arms, the Colorado Parks and Wildlife and the Larimer County Department of Natural Resources said in a joint release, late on Monday. It was not disclosed how the jogger killed the animal, and no one from the CPW or the Larimer DNR was available for comment early Tuesday. The runner was able to get to a local hospital, officials said. His injuries were serious but not life-threatening, they said. The animal's body was recovered near the trail and the jogger's dropped possessions and taken to a CPW lab for a necropsy, officials