The Southern Rocky Mountain wolf hasn't been seen in almost 80 years, but recent cattle attacks spark the possibility that it still exists. Trekking high into the Sierras, Forrest is determined to bring it out of hiding.

The Southern Rocky Mountain wolf hasn't been seen in almost 80 years, but recent cattle attacks spark the possibility that it still exists. Trekking high into the Sierras, Forrest is determined to bring it out of hiding.

In Vietnam, Forrest treks through the world's largest cave searching for the Saola in a hidden oasis. This exotic species was only recently discovered, but rumors swirl that "The Asian Unicorn" might already be extinct.

In Vietnam, Forrest treks through the world's largest cave searching for the Saola in a hidden oasis. This exotic species was only recently discovered, but rumors swirl that "The Asian Unicorn" might already be extinct.

Forrest is determined to find out if the famously reclusive Ivory Billed Woodpecker still exists. The alligator and poisonous snake infested swamps of Louisiana make for a challenging mission, but he is prepared for anything.

Forrest is determined to find out if the famously reclusive Ivory Billed Woodpecker still exists. The alligator and poisonous snake infested swamps of Louisiana make for a challenging mission, but he is prepared for anything.

Deep in the jungles of Colombia, Forrest is on a mission to prove the Rio Apaporis Caiman still exists. Locals believe this crocodilian resides within a lawless land inhabited by guerrilla rebels, kidnappers, and deadly predators.

Deep in the jungles of Colombia, Forrest is on a mission to prove the Rio Apaporis Caiman still exists. Locals believe this crocodilian resides within a lawless land inhabited by guerrilla rebels, kidnappers, and deadly predators.

In Vietnam, Forrest teams up with a conservation group to save the largest turtle species in the world from extinction. Using cutting edge technology, they attempt to find a suitor for the last and only living giant softshell.

In Vietnam, Forrest teams up with a conservation group to save the largest turtle species in the world from extinction. Using cutting edge technology, they attempt to find a suitor for the last and only living giant softshell.

Known for being a pint-size version of its African cousin, the Malagasy Dwarf Hippo has been written off as extinct for 1000 years. Forrest and a local biologist to trek through the bush of Madagascar to prove it still survives.

Known for being a pint-size version of its African cousin, the Malagasy Dwarf Hippo has been written off as extinct for 1000 years. Forrest and a local biologist to trek through the bush of Madagascar to prove it still survives.

Forest sets off on a dangerous, shark-infested search for the extinct Caribbean monk seal. To prove its existence, he and the crew descend into deep waters where they come face-to-face with a giant tiger shark.

Forest sets off on a dangerous, shark-infested search for the extinct Caribbean monk seal. To prove its existence, he and the crew descend into deep waters where they come face-to-face with a giant tiger shark.

Forrest ventures home to Zimbabwe in search of the mysterious Cape Lion a massive black-maned predator. He and the crew navigate the African bush determined to get DNA proof, facing threats of charging rhinos and huge prides of lions.

Forrest ventures home to Zimbabwe in search of the mysterious Cape Lion a massive black-maned predator. He and the crew navigate the African bush determined to get DNA proof, facing threats of charging rhinos and huge prides of lions.