
Walking with Beasts
A pregnant basilosaurus is forced to kill the young of a smaller whale.

A pregnant basilosaurus is forced to kill the young of a smaller whale.

Special effects filled documentary beginning 49 million years ago.

When the Maori first discovered New Zealand, they encountered some deadly predators.

Australia 65,000 year ago: the first human explorers encounter massive deadly lizards.

America was once home to such fierce predators as the giant short-faced bear and the sabertooth cat.

Could the Thylacine or Tasmanian Tiger be surviving decades after it's reported extinction?

Investigating the big cat sightings in the UK such as the beasts of Exmoor and Bodmin.

Investigating the legend of the North American Bigfoot.

Is there really a Loch Ness Monster and could there be other pre-historic survivors?

Investigating the Giant Squid - the last great creature mystery of the sea.

Investigating the Yeti - the world's most famous mystery animal.

Featured species are the leaellynasaura and the tyrannosaurus.

Featured species are the opthalmosaurus and the ornithocheirus.

Featured species are the coelophysis and the diplodocus.

David Attenborough explores why dinosaurs vanished while reptiles like crocodiles and turtles survived.

A look at the scientific work which went into the reconstruction of Big Al the Allosaurus.

Scientists study the perfectly preserved remains of an adolescent allosaurus they call "Big Al."

Nigel Marven is on the trail of the dinosaur with the biggest claws of all time.

Imaging technology and scientific collaboration depict dinosaurs in the wild.

The team examines Lucy, one of mankind's earliest ancestors.