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Crocodylus
Survivors of the dinosaur age, crocodiles are found in the warmer waters of Africa, Asia, Australia, and America. Crocodiles are often confused with alligators, but you can tell them apart by the shape of their tapered snout, and by the way crocodiles’ lower teeth stick out when their jaws are closed.
Crocodiles vary in size. The saltwater crocodile measures up to 10 m (32 foot) in length, while others are no more than 1 m (3 foot) long.

Salt Water Crocodile

Subadult saltwater crocodile gaping - serves to cool a hot head, and also to threaten

Salt Water Crocodile

Adult saltwater crocodile cruising in shallow water

Habitat

ESTUARINE (or SALTWATER) CROCODILE
Crocodylus porosus

Adults can venture out to sea and swim around coastlines or between islands. Individuals have been found to travel over 1000 km (620 miles) by sea.Very large animals will take almost anything including dingos, wallabies, shore birds, other crocodiles, large reptiles, domestic animals, cattle and even people. They will also eat carrion, being attracted from some distance to reach it (even out of water).
Maximum size in males has been documented at around 7 metres (23 feet), and over 1000 kg (2200 pounds) in weight, but 5 to 6 metres (16 to 20 feet) is a more realistic maximum size. Maximum age is at least 70 years, perhaps over 100 years old.

Fresh Water Crocodile

Gravid adult female freshwater crocodile defends herself aggressively

Fresh Water Crocodile

Hatchling freshwater crocodile watches for danger at the water surface

Habitat

FRESHWATER CROCODILE
Crocodylus johnstoni

Freshwater crocodiles are generally found upstream of tidal influence, in lower salinity water. They are actually fairly tolerant of saltwater, yet saltwater crocodiles (Crocodylus porosus) aggressively outcompete them in most areas where they occur. Main habitats include wetlands, rivers, creeks, freshwater billabongs and swamps. They display fairly wide habitat preferences (clear water, muddy, still, fast flowing, shallow or deep).
Size: males reach 2.4 - 3.0 m (53 kg, 116 pounds) or 8 - 10 feet maximum, females reach 2 m (6.5 feet) maximum. Age: maximum rarely exceeds 50 years. It takes 20 years for a juvenile to grow to its maximum size, although growth will continue at a slower rate throughout life.

 

NOT my own pictures - Thanks to www.kingsnake.com/oz

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