Natural World

Two years ago Simon King made Cheetahs – Fast Track to Freedom a film about his attempt to return two orphaned cheetah cubs to the wild. The film ended tragically with the cub Sambu being killed by lions, but his brother Toki survived. Simons new film follows the equally dramatic twists and turns of his continuing story.

Wildlife documentary featuring the fascinating lives of Britains beautiful butterflies filmed in exquisite detail and also a celebration of their enduring appeal to the British people. Butterfly-costumed carnival-goers dance at Notting Hill, street artist Nick Walker uses their image to brighten bare city walls, burlesque dancer Vicky Butterfly recreates butterfly dances and at Britains biggest tattoo convention women reveal their butterfly tattoos. Britains butterflies have never been so threatened, three quarters are in decline. A search for butterflies leads to some of the most beautiful parts of Britain. It opens up the intriguing possibility that a passion for butterflies could help us preserve the landscapes that we love.

A young tigress is chosen to found a new dynasty. Airlifted from her home in an Indian park to life in a new reserve, Baghani the tigress must fight with leopards for territory and learn to hunt dangerous wild boar. Also released is Rajore, a hot blooded young male. For two years every aspect of their lives are followed by the camera. Will they mate and start a family, or will they be killed by poachers?

The giant squid, a creature of legend and myth which even in the 21st century, has never been seen alive. But now, an international team of scientists think they have finally found their lair, one thousand metres down, off the coast of Japan. This is the culmination of decades of research. The team deploys underwater robots and state of the art submersible vessels for a world first - to find and film the impossible.

Sivuqaq is an 18 year old, larger than life captive pacific walrus. By now he should be a dad but things have not worked out. This is where reproduction scientist Holley Muraco comes in. Holley is taking on the biggest challenge of her career - trying to help Sivuqaq become a parent. Yet walrus love is a mystery - even pandas have been bred more successfully than walruses. Holley hopes the clues lie in in exploring the lives of Sivuqaqs wild cousins and that she can find the answers by journeying to their breeding grounds in Northern Alaska.

A pioneering team in Brazil follow wild jaguars to gain new insights into their lives.

David Attenborough has a passion for birds eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe. They are strong enough to withstand the full weight of an incubating parent and weak enough to allow a chick to break free. But how is an egg made? Why are they the shape they are? And perhaps most importantly, why lay an egg at all? Piece by piece, from creation to hatching, David reveals the wonder behind these miracles of nature.

The endearing pangolin is a little-known scaly mammal. Found in Africa and Asia, these shy creatures have an unfortunate tagline - they are the most poached and illegally trafficked animals in the world. Based in Namibia, conservationist Maria Diekmann rescues and rehabilitates her local pangolins. In a bid to better understand the global issues they are facing, we follow Maria to Vietnam, Thailand and China into the very heart of the crisis, where demand for pangolin products is greatest. In what turns out to be an emotional journey, Maria joins forces with a Chinese megastar to build a campaign to bring awareness to the plight of an animal most people have never even heard of.

A professor develops an extraordinary relationship with an octopus when he invites it to live in his home to learn about its intelligence.

Colin Stafford-Johnson continues his journey in Cuba, encountering bats feeding on nectar from giant hibiscus flowers, and tiny frogs, smaller than a fingernail.