Crocodiles are the largest and the heaviest
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Crocodiles are the largest and the heaviest of present-day reptiles. The largest representatives, the Nile crocodile (Crocodylus niloticus) of Africa and the estuarine (or saltwater) crocodile (C. porosus) of Southeast Asia and Australia, attain lengths of up to 7 meters (about 23 feet) and weigh more than 1,200 kg (nearly 2,650 pounds). Some fossil forms (such as Deinosuchus and Sarcosuchus) may have been between 10 and 12 meters (33 and 40 feet) long. In comparison, the smallest species, the smooth-fronted caiman (Paleosuchus) and the dwarf crocodile (Osteolaemus tetraspis), reach about 1.7 meters (about 6 feet) in length as adults.