In newspaperspeak, it's called the "man bites dog" story, those trusty role reversal items that are journalism staples. This is more of a "Master Defends Dog" story, thanks to a rabid mountain lion and a handy, heavy frying pan.
From the video above on CNN.com and this story on azfamily.com:
Brandon Arnold was camping 40 miles west of Interstate 17's Bloody Basin exit with his family and friends. They brought along Apollo, a 3-year-old lab-pitbull mix. Friday morning, as the group was waking up and preparing breakfast, Arnold said a 90-pound female mountain lion jumped out of the bushes. "It was a sneak attack, for sure," he said. "The dog was getting its butt kicked, yelping."