An elite team of Sasquatch specialists journey into the unforgiving Oregon wilderness in search of Bigfoot. The three-week expedition, based on science and expertise, may finally pull the elusive beast out of the pages of legend and lore and into reality.

America's Greatest Animals takes us across North America on a revelatory mission: which of the continent's landmark creatures deserve to make the list?

From nightclubs to night crawlers - Mireya tries discovering as much urban wildlife as she can..

In 2007, scientists from the Wildlife Conservation Society discovered there were an estimated 125,000 western lowland gorillas living in the remote forests of northern Congo. This find offers another chance to protect this endangered great ape and a first look at some unprecedented behaviour – including a knack for using tools. Now primatologist and National Geographic explorer Mireya Mayor ventures into the heart of the jungle to explore the great apes’ secret world. She gets a rare and intimate look into the family life of one gorilla group and witnesses individuals performing feats unexpected in the wild. Spectacularly photographed and featuring new scientific insight, Mystery Gorilla presents startlingly familiar animals like you’ve never seen them before.

The program follows four modern day explorers—a navigator, a wildlife expert, a survivalist, and a journalist—as they substantially retrace H.M. Stanley's famed expedition to find Dr. David Livingstone. Their route deviates somewhat from Stanley's in that it includes a treacherous crossing of the Uluguru Mountains, which Stanley circumvented.