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Saltwater Crocodile

Rex is the HUGE 5 metre Saltwater Crocodile - one of the biggest in the world, in fact - who lives here at WILD LIFE Sydney Zoo on Darling Harbour.


Rex is WILD LIFE Sydney Zoo's mammoth saltwater crocodile. Measuring over five metres long and weighing a hefty 700kg, he is also one of Australia's largest crocodiles.

Like most crocodiles, Rex spends much of his time dozing in his large pool. But don't let his docile façade fool you; Rex is certainly not to be messed with. He came to WILD LIFE Sydney Zoo from another collection after he ate two of his potential mates!

You can find out more about Rex during the daily crocodile talks.

Key Facts:

  • Around 45-50 years old
  • Gets fed a whole chicken twice per week in warmer months
  • Fasts throughout winter

The terrifying saltwater crocodile is the largest reptile in the world, measuring over six metres from tip to tail and weighing up to a mind-boggling 1200 kilograms.

Saltwater crocs (or 'salties') are also known as estuarine crocodiles or Indopacific crocodiles because they can live happily in both saltwater and freshwater environments.

The crocodile is a patient, clever hunter, waiting by the riverbank with only its nostrils and eyes above the water, ready to pounce on anything unlucky enough to come close! Their green-grey colour means they are perfectly camouflaged under the water, and they can hold their breath for over two hours!

They can feast on anything including cattle and water buffalo, grasping them with their fearsome teeth and performing the incredible 'death roll', where they spins their bodies around to drown their prey and twist pieces off, ready to be devoured.

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