New science and amazing demonstrations reveal how a lizard can literally walk on water. And, can jellyfish live forever?

A bird expert reveals how a barn owl catches prey it can't even see. And, what makes octopuses masters of disguise?

High-speed footage reveals how the hummingbird can fly backwards. And, why are hagfish the most disgusting creatures in the ocean?

What a dog's tail wag means, the cleverness of cockatoos, zebras' black and white stripes, the secret behind a crocodile's powerful jaws, and how chameleons change colour.

New science and demonstrations reveal how cats can detect an earthquake seconds before it happens. And, how do sea otters keep warm in icy waters?

Discover how the blue whale became the biggest animal ever, why elephants have trunks, why ladybugs have spots, why some animals live a long time and why cats purr.