Burmese Python (Python bivittatus)

The Burmese python decimates Florida's Everglades with a voracity unmatched by #2's mosquito. Released pet pythons have established a breeding population of tens of thousands, reducing native mammal populations—like marsh rabbits, raccoons, and opossums—by over 90%. Each adult python consumes up to 60 deer-sized prey annually, a 40% higher feeding rate than the average constrictor. This predator's impact is quantified by ecosystem collapse: sightings of small mammals have dropped 99% in affected areas. Its size, reaching 5 meters, lets it outcompete native predators like bobcats, which cannot target such large prey.