The American Crocodile (Crocodylus acutus) is a species of crocodilian found in the Neotropics. It is the most widespread of the four extant species of crocodiles from the Americas, with populations present from South Florida and the coasts of Mexico to as far south as Peru and Venezuela.
The habitat of the American crocodile consists largely of coastal areas. It is also found in river systems, but tends to prefer salinity, resulting in the species congregating in brackish lakes, mangrove swamps, lagoons, cays, and small islands. Other crocodiles also have tolerance to saltwater due to salt glands underneath the tongue, but the American crocodile is the only species other than the saltwater crocodile to commonly live and thrive in saltwater. They can be found on beaches and small island formations without any freshwater source, such as some of the many cays and islets across the Bahamas and the Caribbean. They are also found in hypersaline lakes; one of the largest known populations inhabits the Lago Enriquillo.
The American crocodile is one of the larger crocodile species. Adult males can reach lengths of 6.1 m (20 ft 0 in), weighing up to 907 kg (2,000 lb). On average, mature males are more in the range of 2.9 to 4.1 m (9 ft 6 in to 13 ft 5 in) in length weighing up to about 400 kg (880 lb). As with other crocodile species, females are smaller; rarely exceeding 3.8 m (12 ft 6 in) in length even in the largest-bodied population.
The International Union for Conservation of Nature (IUCN) lists the species as vulnerable, but it has not been assessed since 1996. On March 20, 2007, the United States Fish and Wildlife Service declassified the American crocodile as an endangered species, changing its status to "threatened". It remains protected from poaching and killing under the federal Endangered Species Act.
Because of hide hunting, pollution, loss of habitat, and commercial farming, the American crocodile is endangered in parts of its range. As a result of overhunting in the 1950s and 1960s, Venezuela banned commercial crocodile skin harvesting for a decade starting in 1972. In southern Florida, about two-thirds of American crocodile deaths are attributed to road collisions, about 10% to intentional killing, and only about 5% to natural causes. In recent years in Jamaica there has been rampant poaching of the species for their meat and there has been a significant population drop compounded by the lack of action by the government. In Haiti, they were once found throughout the country, but today the only confirmed remaining presence is at an inland brackish lake, Etang Saumâtre.
An estimated 1,000 to 2,000 American crocodiles live in Mexico, Central America and South America, but population data is limited. An additional 500 to 1,200 are believed to live in southern Florida.