Dr. Paul Calle discusses Nadia, the tiger who tested positive for COVID-19.

The Lake Garda Monster has been described as a huge, humped bear - half snake, half dinosaur. Jeremy travels to northern Italy to investigate, and discovers that these picturesque waters could be hiding several enormous beasts.

Jeremy Wade travels to Alaska to investigate the disappearance of the majestic king salmon. His search takes him through grizzly bear territory, remote native communities and ultimately the Pacific Ocean as he follows a trail of evidence.

A report of an underwater attack in Australia has caught Jeremy Wade's attention. As his investigation unfolds, Jeremy is faced with the exciting possibility that a giant predator he once thought extinct could be making a comeback.

The Aleutian Islands are home to some of the most remote communities on earth. Jeremy Wade investigates reports of strange, alien species in the waters surrounding the islands and the disappearance of fish that have been there for generations.

Something is wiping out the fish in the Australia's Fitzroy River, and Jeremy Wade is determined to discover the cause. Evidence points to the arrival of a new top predator, but could something far more insidious be spreading into Western Australia?

Tales of monstrous, man-sized pike have persisted in Europe for generations. Now, Jeremy Wade is on a journey to catch this prehistoric monster, starting in the lakes of Ireland and leading to un-fished waters in Arctic Circle in Sweden.

Tasmania is home to species found nowhere else on earth, including a colossal freshwater beast capable of breaking a person's arm. Jeremy Wade will venture into the island's dense, eerie forests in search of this formidable creature.

A recent sighting in South Africa of a bizarre beast - half human, half fish - draws Jeremy Wade into the story of a creature with ancient origins and a fearsome reputation.

Jonathan and Angela return to Maasai Mara to reunite with the Marsh Pride.

A wildebeest becomes a meal for a hungry pack of cheetahs.

Bahati struggles to protect her three cubs from baboons and lions.

Forrest searches for a Zanzibar Leopard on this history-making expedition.

Forrest searches for the large, furry Pachylemur in the Madagascar jungle.

Forrest and a specialist in Newfoundland search for the White Wolf.

A startling piece of Bigfoot footage sends the team to northern Georgia.