Crocodiles are the large, carnivorous reptile of the order Crocodilia, which are found in tropical and subtropical regions. Crocodiles live in swamps or on river banks and catch their prey in the water. They have flattened bodies and tails, short legs, and powerful jaws. The eyes, ears and nostrils are located near the top of the head and are exposed when the crocodile floats on the surface of the water. The ears and nostrils have valves that close when the animal is submerged.
Small crocodiles feed on fish and small aquatic animals; larger ones also catch land mammals and birds that approach the water.