NATIONAL BRIEFING / WYOMING

A Colorado man says he wielded his chain saw as a weapon to fight off a starving mountain lion that attacked him while he was camping with his wife and two toddlers in northwestern Wyoming.

Dustin Britton, 32, said he was alone cutting firewood about 100 feet from his campsite in the Shoshone National Forest when he saw the lion staring at him from some bushes.

Britton revved his 18-inch chain saw and tried to back away. But the 100-pound lion followed. As the animal pounced, the 6-foot, 170-pound Britton raised his saw and met it head-on -- a collision that he said felt like a grown man running right into him.

The wounded animal retreated. Wildlife agents shot and killed the lion Monday after it attacked a dog brought in to track it.