Cuban Crocodiles prefer freshwater marshes and swamps, and rarely swim in saltwater. Additionally, they have the smallest range of any crocodile. They are found only in Cuba's Zapata Swamp in the southwest and in Lanier Swamp on Isla de Juventud, a total area that encompasses less than 200 square miles (although their range used to be larger). Sadly, they are now the most endangered species of crocodile in the world.