The frill-necked lizard is a tree-dweller that
lives in the tropical savannas
Northern Australia, like Australia generally, has a great
diversity of reptiles. These include the largest reptile in the
world, the saltwater crocodile, the well-known frill-necked lizard
and some of Australia's largest and most venemous snakes.
Because reptiles are "cold-blooded" they do not need to maintain
a constant body temperature like mammals and birds, which means
when food is in short supply they can reduce their food intake to
quite low levels. This allows reptiles to thrive in northern
Australia's very variable climate with its long dry season.
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