Inside Nature's Giants: The Camel

We don’t think of Australia as the home of camels, yet in the middle of this vast continent there are over a million feral dromedaries roaming around.

Inside Nature's Giants: Dinosaur Bird

The Cassowary is a gigantic bird with a fearsome reputation, It has earned the dubious reputation of being the most dangerous bird in the world

Inside Nature's Giants: Leatherback Turtle

The ING team uncover the evolutionary mystery of how turtles developed shells to protect themselves from some of the sharpest-toothed predators on the planet.

Inside Nature's Giants: Racehorse

The thoroughbred racehorse is one of the greatest athletes on the planet – galloping with incredible speed and stamina - for such a large animal. It is the result of unnatural selection, and exists on a knife edge between glory and catastrophic failure.

Inside Nature's Giants: Hippo

The team head to the largest population of hippos in the world.

Inside Nature's Giants: Kangaroo

Australia's most iconic animal – the kangaroo.

Inside Nature's Giants: Kangaroo

The vast expanse of the Outback is home to millions of these bounding giants – some stand two metres tall - but sadly, every year thousands are fatally injured in traffic accidents. Veterinary scientist Mark Evans and comparative anatomist Joy Reidenberg take the opportunity to delve inside these bizarre animals.

They uncover the kangaroo’s lower jaw that splits in two and a massive Achilles tendon that enables it to hop like a frog. But it’s the reproductive anatomy they find most surprising: the male genitalia is back to front, whilst females boast three vaginas and a pouch in which they grow their young from jelly-bean sized embryos.

Meanwhile, Simon Watt heads into the Blue Mountains, just outside Sydney, to follow in the footsteps of Charles Darwin. Back in 1836, when the young naturalist visited Australia, he wondered why the animals there where so different to those back home. Joined by Darwin’s great, great grandson, Christopher - Simon goes in search of some of these other creatures - a bird which decorates its nest with an assortment of blue ornaments – from clothes pegs to bottle tops - and a primitive mammal that lays eggs like a reptile. Christopher explains how these animals and the great island they live on played a crucial role in developing his ancestor’s heretical ideas on evolution.

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for Channel 4
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