There is a wetland in the United States where raccoons have all but vanished. Where opossums are a rare sighting. Where rabbits, once everywhere, no longer show up on wildlife surveys at all. The cause isn't disease, or drought, or habitat loss in the usual sense. It's a snake, one that was never supposed to be there in the first place.
The Burmese python, native to the forests and grasslands of south-east Asia, has spent the last four decades turning Florida's Everglades into its own hunting ground. And the toll on native wildlife, backed by years of field data, is hard to overstate.
