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A zombie-like pathogen is spreading to big cats around the world, removing their fear of human civilization. These predators have a thirst for blood, and we're their next target.

Best friends and wildlife filmmakers go on a high-risk mission in Belize to track down and capture a 16-foot-long crocodile that has reportedly claimed five victims since its escape from a razed sanctuary.

Costa Rica, the Central American paradise known for its monster crocs, has been facing increasing numbers of human attacks and deaths. Renowned reptile expert and Gator Boy Paul Bedard leads an expedition in search of a solution.

Mobs of vermin. Angry hives of killer bees. Hordes of hungry sharks. You've seen them in your nightmares, but these swarms are real, deadly and on the rise.

A shocking cell phone video of a carnivorous African lion stalking the streets of Milwaukee sets the city on edge. Renowned game tracker Rory Young travels from Africa in pursuit of answers and the big cat itself.

Coyotes stalk an unsuspecting hiker, thousands of birds inexplicably fall from the sky, chimpanzees terrorize a suburban neighborhood and an escaped tiger goes on the attack.

Bystanders help save two men swarmed by bees in Texas, a girl is mauled by a bear in Alaska and an Ohio sheriff's department goes on tactical alert when dozens of exotic animals escape from a private zoo.

Cases of individuals and communities whose lives were forever altered by rabies, including a village under attack from a rabid beast and a young woman saved by medical experimentation.

Deadly animals are everywhere, and in Australia they're found in the ocean, the outback and even the backyard. Some of these dangerous encounters with Australian wildlife are re-created through expert analysis and victim accounts.

These are the most massive, fear-igniting monsters, with their eye-popping rampages of sheer terror all caught on tape. With slithering serpents, dagger-toothed cats and stealth sea assassins, we're counting down the top ten most ferocious attacks.

Bear attacks are on the rise, and they are moving towards playgrounds, shopping malls and even inside suburban homes. Now victims and their families share their stories of terrifying encounters with these fierce predators.

The ferocious Tasmanian Tiger was declared extinct decades ago, yet sightings are still reported. A trio of experts venture into Tasmania's undeveloped wilderness in search of one of the most unique and terrifying predators ever to walk the earth.

Paul Bedard and "Crocodile Mick" Pittman join forces in northern Australia to explore the dangers, the science and the issues surrounding an impending crisis -- a recent invasion of giant, maneating crocodiles.

Five divers wash ashore on an Indonesian island overrun with killer Komodo dragons. In the US reptile experts attempt to control the spread of the vicious Nile monitor lizard.

A team of deep-sea divers investigate the wreck of German U-boat, rumored to have been attacked by a sea monster during World War I.

A team ventures deep into the Alaskan wilderness in search of a bear believed to be the largest to ever roam the Earth. But as they track it deeper into its deadly domain, they discover their greatest challenge will be surviving the expedition.

The legendary kraken lurks in the dark and may be headed for our shores. From fishermen killed by ravenous squid to sailors who've witnessed the epic-sized monster in the flesh, these stories show the kraken myth is all too real. Can anything stop them?

A maneating crocodile terrorizes a town in the Philippines until a team of brave hunters captures a 20-foot-long super croc. But they begin to wonder if they caught the right crocodile or if there is an even larger one out there.

An alien species is out of control in America -- the Burmese python. Breeding more and more, swallowing bigger and bigger prey, they're proving even humans are fair game. Can anything stop these maneaters before it's too late?

Giant Asian hornets are a nightmare of evolution whose venom melts flesh and kills. A brave group of hunters will stop at nothing to drive back the swarm, but there may be no way to stop them.

Scientist Mark Evans leads an expedition into the remote mountain kingdom of Bhutan to investigate recent reports of mysterious footprints in the snow.

Dr. Mark Evans, scientist and explorer, is on a mission to sift fact from folklore and distill the plausible from the possible as he searches for a rational explanation for the mysterious Himalayan biped known as the Yeti.

In 1977, an American scientist is suspected of murdering and cannibalizing two colleagues in the jungles of Indonesia.

Dr. Paul Robertson examines the startling, never-before-seen video evidence of mermaids that has come forward since MERMAIDS: THE BODY FOUND first aired in 2012.