Vital to the survival of many species, waterholes draw large concentrations of animals seeking to quench their thirst. But these wildlife hotspots are anything but peaceful oases — where there is water, Africa’s deadliest are often nearby. From Nile crocodiles waiting beneath the surface for their parched prey to come to them to violent territorial disputes between giant hippo bulls, Africa’s waterholes set the stage for some of the continent’s greatest spectacles.

Using a combination of remote cameras, long lens and drone filming, and told across the seasons, the Secret Kingdom of the Amur Tiger takes you deep inside this remote kingdom to unveil long held secrets about these shy and elusive hunters; how they navigate and co-exist along secret corridors, use secret messaging to communicate to one another, hunt their prey and exploit the seasons, with the ultimate ambition of finding a partner and bringing new life in to this world.

Matt takes on three dogs that are in real danger of losing their homes or their lives, including Moneypenny, a snuggly pug that has some severe bullying issues. A beautiful Australian shepherd named Whiskey strikes fear in his owners’ home, and Pax doesn’t bring peace to his owners, who have had to cut themselves off from the outside world.

In the 1970's Lizzie Downs was popular for being the place to find huge crocs. Over the past years they've had a chance to re-bound.

Lake Tanganyika, one of the largest lakes on earth combines two very different yet equally magical worlds: an untouched wilderness along the shores, home to chimpanzees, elephants and antelopes and a spectacularly diverse underwater universe. The lake shares many of the ocean’s characteristics. Glorious sunsets, occasional storms with terrifying waves and waters filled with sardines, colorful fish, crabs and even sponges.

Africa has its notorious killers, but other unlikely animals are rewriting the rules of the predator playbook. The mantis shrimp packs a punch with a force of a .22 caliber bullet, secretary birds take down threats with lethal legs, and the honey badger bullies off on a pack of wild dogs. Some of the continent’s most unexpected creatures can be the deadliest.

National Geographic goes to Botswana to examine the struggle for survival between lions and hyenas.

At the top of our world lies the Arctic tundra. The tundra's bleak terrain is home to a fascinating array of animals, each with unique adaptations.

The Ethiopian Mountain world is ruled by two very different queens, but both mothers raising daughters. A gelada monkey rules a tight knit sisterhood, but with her only daughter on the cusp of adulthood she must make great sacrifices for her future. On the plateau above, an Ethiopian wolf also has a daughter, but this mother must be ruthless to protect her own legacy.

National Geographic goes to Botswana to examine the struggle for survival between lions and hyenas.

Home to a trillion trees, the boreal forest encircles the entire globe. Bears, wolves, and hummingbirds emerge, hoping to take part in a feeding frenzy, in the largest forest on earth.

At the top of our world lies the Arctic tundra. The tundra's bleak terrain is home to a fascinating array of animals, each with unique adaptations.

Scientific buoys immersed in the abyss off the coast of the French Riviera enable us to make for the very first time a detailed scientific study of the largest bony fish in the world, the Giant Oarfish, the creature behind the myth of the Sea Serpent.