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.

University of Florida researchers documented a surprising new threat to Burmese python eggs in the Everglades, adding to growing evidence that native wildlife is fighting back against the invasive species.