National Geographic: Nature Untamed

Africa's incredible array of creatures includes an elite group of 12 known for their deadly proficiency. From scorpion to buffalo to lion, witness their diverse weaponry and tactics.

A "tail" of power, domination and triumph over adversity -- we'll follow this tireless engineer as she struggles to survive while facing the challenges of predators and the fury of the elements. Using a custom-designed camera system, NGC tracked the American beaver for one year to see how her constant need to build not only changes the terrain but also affect the species surrounding her.

A team of dedicated scientists take on the historic conservation project of rebuilding the great American plains. More than 200 years ago, the Great Plains were an American Serengeti. Since then, human encroachment has slowly deteriorated the land and its wildlife. To rebuild an ecosystem on more than 3 million acres, conservationists must track and reintroduce populations of iconic American species, some on the brink of extinction. These include the bison, the pallid sturgeon and prairie dog.

The anaconda is known as terrifying killer snake. Now, imagine trying to capture one using your bare feet to wade through a murky marsh in search of the predator. We join a husband-and-wife research team, Dr. Jesus Rivas and Dr. Sarah Corey, on an expedition deep into the Venezuelan wetlands to study this misunderstood predator. AKA: Anaconda: Killer Snake?

The mysterious death of hundreds of hippos at the Queen Elizabeth National Park in Uganda sparks a "whodunit" on a national scale. In 2004, a park research ranger discovers the corpses of two hippos, bloated and decomposing. The cause of their death is uncertain. Yet in the next days and weeks, the natural paradise is blighted with more and more corpses. As the body count rises, an international team of scientific investigators struggle to find out the cause.

Chimpanzees in Senegal have been observed carrying out astounding behaviors that have experts stunned. They've developed survival skills once believed to be performed only by humans - like hunting mammals with tools made of sticks. What can their actions tell us about our own origins? Anthropologist and National Geographic Emerging Explorer Jill Preutz chronicles these chimps and the lessons to be learned about ourselves.

At eight feet long and weighing 150 pounds, the Komodo dragon is the world's biggest lizard, lethal enough to kill with one bite.

In a lakeside village in Cameroon, West Africa, 2,000 people mysteriously die in one night. Witnesses claim their neighbors were suffocated by a white fog as they slept. Without any other clues, the question remains, was this Death Fog natural or man-made? In this area of volcanic activity, could the deaths have been caused by toxic fumes? Or was something even more sinister at work?

A shark shoots skyward, tackling a herd of seals, as Nat Geo expert Ryan Johnson heads to sea with researcher Alta De Vos. Join the pair as they unravel a mystery surrounding Seal Island. Explore what seals do to avoid the great whites' jaws.

Far from civilization, a team of scientists, led by Dr. Enric Sala and joined by Explorer-in-Residence Mike Fay, search in a wilderness of waves for ancient secrets and living treasures. In the most comprehensive survey ever attempted, our scientists discover a hidden world found no where else on earth. Full of coral, fish, and, especially, sharks - this is a world where predators outnumber prey. What they find could change our understanding of coral reefs forever. Enric Sala and his team search for the key to save our planets reefs... in a hidden paradise called Shark Eden.

See firsthand the most interesting and crazy creatures that roam the earth. Find out how these creatures have survived and grown over time.

In April 2006, an American sports hunter shot and killed a mysterious bear in the arctic which unleashes a scientific investigation and a criminal inquiry into the exact nature of its identity.

Oceans cover two thirds of our planet. These five massive bodies of water create the largest eco system on the planet. The Pacific, Atlantic, Indian, Arctic and Antarctic Oceans contain some of the most dangerous animals on earth. Unique and venomous creatures hunt in tropical waters, while powerful carnivores rule the icy Antarctic. Ideally suited for survival in their ocean environments, twelve elite creatures stand above the pack, armed with keen intellect, ingenious camouflage, venomous fangs and bone-crushing jaws. Whether hunting or defending, their hardcore weaponry should be avoided at all costs! Dive into their world to experience their full, lethal potential -- and see what happens if we get in their way. They're elusive, powerful and they're dangerous. They are the Oceans Deadly Dozen.

It's a rare and truly amazing sight to witness. Off the coast of Argentina, a pod of orcas can ride a wave to shore, seize their prey off the beach and then slide back into the water with their kill. Mastering this skill takes years of practice, and is so dangerous that fewer than half of these orcas attempt it. Nat Geo follows two of the masters, Mel and Maga, as they feed on up to 16 sea lions a day and through rigorous training, pass this extraordinary hunting talent on to their offspring. AKA: Orca Killing School (UK)

The loggerhead sea turtle is one of the world's most endangered animals, but little is known about its reproductive behavior. In an effort to save the species, expert Dr. Col Limpus is studying what happens to hatchlings after their birth on Australia's beaches. For ages, the lives of loggerheads were mostly secret - we had no idea how they spent the years between when they hatched and adulthood; no idea how old a female was before she came ashore to breed.

Off the coast of San Francisco, an unexpected killing challenged the great white shark's supremacy as the ultimate predator when one became prey to a killer whale. Whale-watchers witnessed a stunning act of nature as a killer whale rose to the water's surface with a great white in its mouth and held it there for 15 minutes. Even more amazing, biologist Peter Pyle was nearby and able to get underwater footage of two whales feeding on the shark.

In January 2004, the carcass of a 50-ton sperm whale explodes in a Taiwanese city center. NGC examines the physics and the biology of this 100,000-pound animal whose body was destroyed by its own internal forces.

Wild Dogs gives an inside look at how wild dogs operate as group hunters, analyzing everything from instinctive strategy and tactics, to the moment of capture. We follow the Shiyane pack of wild dogs as they try to catch elusive prey in South Africas Imfolozi Game Reserve. This is no easy task and to beat the competition, the pack must get creative. Well see these endangered predators employ three different lines of attack in order to feed their young and secure the next generation of wild dogs in Imfolozi.

Eight years in the making, this stunning documentary reveals the awesome survival skills of the American buffalo, from epic battles with grizzly bears and wolves to treacherous winters and late summer mating seasons.

Dangerous predators hunt in urban alleyways and raid the suburbs for an easy meal.

Fast and efficient, an ocean legion is on the move. Growing in momentum, single pods congregate to find food. Combining in battalions over 3000 strong, this is the Dolphin Army. Filmed over 3 years during the spectacular Sardine Run along the eastern coast of South Africa, Peter Lamberti and his team have filmed one of the fastest predators in the ocean – the Common Dolphin. Using the advanced underwater technology, we follow a small herd of female dolphins as they battle shark threats, raise their calves and journey towards the greatest feeding opportunity in the ocean.

Follow the journey of a rebel named Black Wolf who breaks from his pack and survives to be one of the oldest wolves in Yellowstone. He'll travel paved roads most wolves avoid at all costs as he ventures out to mate with a rival pack's females. At nearly twice the age most wolves reach, Black Wolf's unorthodox lifestyle likely means he has more pups than any wolf in Yellowstone. NGC cameras capture the action when he finally achieves alpha male status in his own pack.

National Geographic on Crocodiles

National Geographic journeys a thousand feet beneath the sea, to a world hidden from human eyes, to watch the earth's largest predator pursue its prey. Using the most sophisticated "animal camera" yet devised, National Geographic tracks the sperm whale and its prey—the deep-sea squid—on a hunt that takes place so deep beneath the sea that no human has ever seen it before.