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Perentie

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The perentie is a very large monitor lizard.

Perentie lying
Perentie lying

It is the biggest lizard living in Australia. Only three other lizards are larger than it. These are the Komodo dragon, the Asian water monitor, and the crocodile monitor. Perenties live in the dry, arid parts of Australia. They stay west of the Great Dividing Range. You can find them in Western Australia and South Australia. They also live in the Northern Territory and Queensland.

Perentie & Echidna
Perentie & Echidna

These lizards have many ways to move and stay safe. They are excellent diggers and can make a burrow in minutes. Their long claws help them climb up trees with ease. To see around them, they often stand on their back legs and tails. Scientists call this behavior tripoding. When they are scared, they might freeze and stay very still. If they cannot run away, they will defend themselves. They can hiss, lunge, or strike with a whip-like tail.

People have known about these lizards for a long time. A British zoologist named John Edward Gray described them in 1845. He originally called them the "gigantic water lizard." Later, George Albert Boulenger moved them into the genus Varanus. In many Aboriginal cultures, the perentie is very important. It is part of the Ngiṉṯaka dreaming. Some desert tribes used the lizard for food. They also used the fat for ceremonies and medicine.

Perenties are apex predators, which means they are at the top of the food chain. They hunt many different living things. Adults eat reptiles, small mammals, and even birds like diamond doves. They sometimes eat sea turtle eggs or hatchlings near the coast. They can even hunt young kangaroos using their strong claws. Young perenties have a different diet. They mostly eat insects like grasshoppers and centipedes. They usually swallow their food in one big gulp.

Scientists have learned new things about how perentie bites work. In late 2005, researchers from the University of Melbourne studied them. They found that monitors may be somewhat venomous. This means they have oral secretions, or fluids in their mouths, that can cause harm. A bite can cause swelling and pain very quickly. It can also disrupt how blood clots in the body. This discovery changed how scientists think about the biology of reptiles.

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File:Perentie lying.jpg
Perentie lying.jpg
File:Perentie & Echidna.jpg
Perentie & Echidna.jpg
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