Alison Joslyn was biking through Shark Valley in Everglades National Park when she spotted an American alligator clamped onto a large Burmese python, chewing on the snake before swimming off with it still locked in its jaws.

A Burmese python population has emerged in Southwest Florida, raising fresh concerns about the invasive predator's spread.

Case dismissed, but fight spotlights clash between aggressive invasive species threat and federal park rules on handling wildlife.