The largest reptile in the world is the saltwater crocodile (*Crocodylus porosus*). These formidable creatures can reach lengths of over 20 feet (6 meters) and weigh over a ton. They are found in various habitats, including rivers, estuaries, and coastal regions throughout Southeast Asia and northern Australia. Saltwater crocodiles are known for their powerful jaws and aggressive behavior, making them apex predators in their environments. Their impressive size and adaptability have earned them a fearsome reputation, and they play a crucial role in maintaining ecological balance in the ecosystems they inhabit.