Has a mountain lion ever attacked a human?

Human encounters with mountain lions are rare and the risk of an attack is infinitely small. You are more likely to drown in your bathtub, be killed by a pet dog, or hit by lightning. If lions had any natural urge to hunt people, there would be attacks every single day.

Are there black panthers in Oklahoma?

Are there black panthers in Oklahoma? Its not impossible for somebody to see a large black cat in Oklahoma. What is impossible, or has not been documented in any setting in any region of North America, is a black mountain lion. There are black jaguars.