Natural World

Leopards are built for strength rather than speed, hunting in the shadows and ambushing their prey. In an ever shrinking world, their lives are colliding with people - attacks are reported regularly and hundreds of these big cats are stoned, trapped or shot.

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.

David Attenborough narrates the charming and fascinating story of some real-life animal romantics. There are show-offs and singers, dancers and fighters, stories of undercover affairs and heart-warming devotion. These include a male polar bear that plays hard to get, a lemur whose odour bags him a mate and a lizard who is tender and faithful to the very end. It reveals that animals can be loving, complex, funny and inventive - it is all part of the mating game.

Sri Lanka, the tropical island lying off the southern coast of India, is home to its own special elephants. A sub species of the Asian elephant, they have their own unique characteristics. In this programme, award winning wildlife cameraman Martyn Colbeck of Echo of the Elephants fame travels to Sri Lanka to try and get to know them. Martyn has planned his arrival to coincide with the start of the monsoon, hoping it will be the best time to find and follow a new born calf. By drawing on local knowledge, Martyn begins to unravel the complex social world of Sri Lanka's elephants - he witnesses a fight over a calf, a battle between two bulls in musk and, at an elephant sanctuary, befriends an orphaned elephant who sadly lost a leg to a snare and is facing an uncertain future.

Peanut, Hero and Tarzan are three cheeky monkeys. They live on the paradise Indonesian island of Sulawesi with the rest of their gang of crested black macaques. These very special primates are found nowhere else in the world. Twenty-five years ago, wildlife cameraman Colin Stafford-Johnson visited Sulawesi for the first time and now he's returned. Fascinated by the monkeys, Colin hopes to reveal their sometimes violent, often playful and, just like our own, highly political world. What he discovers leads him on a much bigger journey than he was ever expecting.

Leonora is no ordinary orangutan, she is a pioneer. With her three year old son in her arms, she is about to set off on an epic journey back to the wild - the great ape escape. It is a long way from what she is used to. After being orphaned as a baby, she has spent the majority of her life in a rescue centre. She is leaving behind 600 other orangutans, all of whom are relying on her for their chance at freedom. If Leonora can make it, they could too.