A caving expedition recently discovered a community of dwarf crocodiles living in the Abanda Caves, Gabon. The crocs are living in pitch darkness, hunt bats and some have bright-orange skin. Part of the original team returns to find out more about this bizarre phenomenon. It's mission impossible to access the crocs world and there's no way of knowing what they might find.

Lions and buffalo battle for survival on the African grassland.

Documentary which follows crocodile expert Brad Bestelink on a quest to dive with crocodiles without a cage or any other protection.

Hippos and crocs have lived side by side for millennia, but are they cozy bedfellows or arch-enemies? One is a hefty herbivore, the other is the most successful freshwater predator on the planet, so how do they manage to survive together in the same habitat? They each have a unique arsenal of attributes honed by centuries of evolution; muscle power, bite force and ferocious dentition give them the edge in their environment. But once a year, their peaceful semi-aquatic existence turns into a battle for survival.

The impressive firepower and fearsome reputation of the cobra family that rules the wilds of Africa and Asia.

After years of extreme drought, the Boteti river in Botswana has finally returned in all its glory. This film documents the extraordinary shift in the ecosystem and the dramatic changes it brings to the resident animals.

Incredible Insects A captivating world of creepy crawlies exists all around us. And they are the biggest group of animals in the world, outnumbering humans 200 million to one. Thanks to millions of years of evolution, these invertebrates not only survive in almost every landscape known to man, but also thrive by means of fascinating, and sometimes bizarre adaptations. There's the Bombardier beetle that squirts a boiling hot liquid from its anus, the Assassin bug that turns its victims into soup, and the Parasitic wasp that lays her eggs inside her victims, until her young are ready to eat their way out. We end off with the biggest bugs on the planet: the Atlas moth with a wingspan of over 20 centimetres, the Hercules beetle that can carry 850 times its own weight, and the Giant centipede - big enough to catch flying bats from midair!

Enter the harsh and unforgiving Kalahari and follow a lion pride attempt to save their threatened bloodline.

A male lion cub is born into a powerful pride and quickly establishes his dominance over his siblings. But after a fight with his father, he is immediately banished from the pride. How will he cope with the brutal reality of the African savannah

A clash of true oceanic titans sees fights in the remote battlefields of Ascension Island. Tuna are often faster, fitter and bigger than the sharks.

It's hard work being the world's biggest dragon on Rinca island. Competition is so fierce, and the global temperature slowly rising

Venom expert Dr. Bryan Fry embarks on a dangerous island journey to uncover the deadly secrets of vipers, stonefish and the formidable Komodo dragon.

Cuba's enforced isolation has resulted in the unlikeliest of marine reserves: a huge, rambling archipelago known as Jardines de la Reina, or "Gardens of the Queen." Stretching around 140 miles along the southern coast of Cuba, it's one of the longest barrier reef systems in the world. Get an up-close look at Fidel Castro's diving playground, a forgotten ocean paradise unseen for half a century, and witness exotic species rarely seen elsewhere in the region. It's the lost jewel of the Caribbean, but how long can this pristine wilderness survive?

It begins at the end: Tau is dying; a slow shutting-down creeps over his body. Its time to reflect His life is over but it was well spent.

Lions - the most feared, most iconic predator in Africa but a lion is not just a lion. Each is very different to the other. Different parts of Africa demand specific things from lions to survive. The secret is to be highly adaptable. At the end of the day, the livelihood of the pride rests on the female's shoulders. She's the one who must excel. Follow three lionesses from different parts of the continent to see how they respond to win?

A routine drone survey turns deadly when Ryan Johnson, a marine biologist based in South Africa, films a humpback whale being attacked and strategically drowned by a Great white shark. This is a total perspective shift for the creature.

When a vicious fight with the Male leopard results in her cub's death, Malika must reinvent herself after the loss. In the battle to survive she faces dangerous enemies and must hunt way outside her comfort zone. Her desperation inspires ingenious new ambush techniques and each success slowly rebuilds her confidence till she has the courage to face her enemies and regain her former glory.

The Amazon is one of the wildest and least explored parts of the planet. Encompassing 6 countries and 2 million square miles of forest, river and floodplain, it has the highest diversity of life on the planet, but what lies below it is truly shocking. In its deep muddy rivers, clear streams and expansive floodplains a freak-show of fish life has exploded, with some of the strangest shapes and weirdest adaptations on Earth. Hiding in the vast rivers and streams is an electric grid, a bizarre community of fish with a highly sophisticated electric sixth sense. Using electricity, these "Super" fish can communicate wirelessly, control each other remotely and emit shocks that can stop a human heart. This cryptic world has mystified scientists throughout the ages. Now an intrepid scientist, Will Crampton ventures back into the dark jungles where the inspiration for our technology driven world first emerged, in an attempt to unravel their secrets and unlock the electric code.