Brady and his team try new methods of catching the strong, fast and semi-aquatic animals, one of Africa's biggest wildlife management challenges.

After several villagers are killed by man-eating crocodiles, Brady trains a team of local rangers to capture crocs for relocation.

Brady Barr embarks on a mission to better understand the sawfish.

The sixgill shark, one of the oldest carnivorous species on earth, has remained elusive despite the creature's massive size.

A python repeatedly bites Barr and wraps him in its powerful coils when he tries to capture it for further study.

A Humboldt squid in Mexico's Sea of Cortez.

Brady works to create a unique, protective crocodile-suit to allow him to get close to wild Nile crocodiles without having to restrain them.

Brady develops a reinforced, life-size hippo decoy to protect himself as he gets close to Nile hippos in a quest to better understand the animals.

Brady investigates brown bears and polar bears in the Alaskan rainforest and Canada's Hudson Bay.

Brady tries to establish the wildest animal in America's west.

Brady seeks the electric eel in the heart of the Surinamese rainforest.

Brady rates four salamanders based on size, survival skills, sliminess and toxicity to determine the king of all salamanders.

This award-winning series presents compelling untold stories and covers a wide array of provocative subjects. "Explorer" aired for 25 years -- the longest-running documentary series in cable TV history -- before being relaunched in 2015 after a five-year hiatus. Each monthly episode of the new "Explorer" takes a similar deep dive inside a story from the pages of a recent National Geographic magazine issue, taking viewers not only to the most remote corners of the globe but also to the furthest reaches of the mind and deepest crevices of history -- on urgent missions of discovery.

British adventurer and cinematographer Richard Terry travels to faraway jungles and remote islands in search of the truth behind stories of unknown creatures attacking, and killing, humans. In the Amazon rainforest, Terry is on the trail of a huge spider said to be attacking villagers; in southern Mexico, reports of a terrifying creature that attacks locals at night sends Terry into the jungles of Chiapas to investigate; and in the Indonesian archipelago, Terry island hops to expose a giant, blood-thirsty reptile that preys on livestock and humans.

"Move as millions. Survive as one." That's the catchphrase of this seven-part event for which a National Geographic team spent two-plus years recording across 20 countries and all seven continents. Narrated by Alec Baldwin, it tells the stories of many of the planet's species and the journeys they undertake to ensure their survival. The diverse range of animals shown -- many revealing behaviors never caught on film before -- include Botswana zebras, Mali elephants, flying foxes in Australia, Pacific white sharks, and the white-eared kob of the Sudan, thought to have been destroyed during decades of violence.

Dr. Brian Hare applies his research to help dog owners better understand their canine companions.

With a unique ability to see the world through their eyes, renowned dog behavior expert Cesar Millan rehabilitates all manner of troubled canines in this popular reality series, and often that involves Millan not only teaching dogs new tricks but also training their owners how to achieve a balanced relationship with their pets.

Stunning computer animation brings the most ferocious giants of the Ice Age back to life, creating a portrait of their wild existence and puzzling extinction. Also, details about their lives and disappearance are revealed through the work of paleontologists, who uncover fossilized bones of these lethal creatures.