Extras
David Attenborough comes face-to-face with a dodo, the first animal driven to extinction by humans.
Sir David Attenborough befriends a giant dinosaur, the Diplodocus.
Sir David Attenborough explores the research surrounding the existence of Bigfoot.
The team films something not seen before: a teaching session between adults and their young.
Killer whales rarely risk hunting leopard seals - Antarctica's second-top predator.
Marine biologist Callie Veelenturf uses her research on endangered sea turtles to help protect them.
Filmmakers discuss their experiences living on location with Africa's three big cat families.
Sir David Attenborough explores London鈥檚 Natural History Museum, where extinct creatures come alive.