
Walking with Beasts
The largest of all the sabre tooth cats roamed South America one million years ago.

The largest of all the sabre tooth cats roamed South America one million years ago.

Three million years ago, Ethiopia was home of the ape-man Australopithecus and the sabre-toothed Dinofelis.

Twenty five million years ago lived the Indricotheres - the largest land mammals of all time.

In the sea, 36 million years ago the most monstrous mammals can be found.

Forty-nine million years ago, the world was heavily forested and birds ruled the planet.

This episode's featured species are the leaellynasaura and the tyrannosaurus.

This episode's featured species are the opthalmosaurus and the ornithocheirus.

This episode's 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.

In 1991, scientists discovered a perfectly preserved Allosaurus body and named him Big Al. This is his story.

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

In a brutal world where nature is both friend and foe, our ancient powers take shape.

What finally killed all the woolly rhinos, mammoths, sloths and sabre-toothed cats?

Professor Alice Roberts ventures to the areas hit hardest by the cold of the Ice Age.

Professor Alice Roberts is on the trail of Ice Age beasts including the sabre-toothed cat.

Steve looks back at the experiments over the series and chooses his highlights.

Steve goes on a mission to uncover what was deadlier than the dinosaurs.

Steve is on a mission to unearth that were far deadlier than they first appeared.

Steve's on a mission to find dinosaurs with incredible abilities.