The Florida Everglades is now home to an expanding population of introduced Burmese pythons. Nowhere else in the world has a species of python established a large breeding population outside its native range. The snakes, native to Southeast Asia and a common pet-trade import in the 1990s, are not the only invasive reptiles in southern Florida: three species of frogs, four of turtles, forty-three of lizards and four other kinds of snake have become established, half of them traceable to the pet trade by way of accidental escapes or deliberate releases. But Burmese pythons are the most imposing of southern Florida’s non-native reptiles. Feral females are able to reach fifteen feet and weigh more than 50 kg.