A woman hiking near Placerville, Colo. says she "sang opera" while being stalked by a mountain lion for about 30 minutes Monday. "I would back up and it would creep forward, so I'd stop. Eventually it sort of crouched down, like part way," said Krya Kopestonsky, 40. "I don't know why, I just started singing opera really loud. It kind of put its ears down and just kept looking at me, and it sort of backed away." The lion finally retreated. USA Today and Montrose Daily Press.