It\'s a voracious predatory catfish that prowls the rivers of Southeast Asia. Growing up to 6 feet long and weighing more than 175 pounds, the wallago catfish is a pure carnivore, equipped with formidable jaws and a double band of saw-like teeth that are designed to attack. Seeking help from local fishermen, Zeb Hogan travels to the jungles of Malaysia, where wallago are rumored to swallow monkeys, porcupines and even monitor lizards.

When water meets land, landscapes clash and predators such as dolphins, lions, monitor lizards and baboons must master skills to hunt in both habitats. In the East African rift, where mountains and a dry lakeshore confine predators to a narrow strip of land, witness remarkable altruism among lions and see firsthand how ferocious a group of seemingly playful olive baboons can be.

There are still places on Earth where fields of grass stretch as far as the eye can see. In order to survive in these open spaces, predators must hide in plain sight. On the vast plains of the African savanna, banded mongooses rely on strength in numbers in order to succeed in a land of giants. Cheetahs and secretary birds must conquer extreme heat and elusive prey, risking their lives to feed their offspring. Mongolian wolves hunt for scarce food on the steppe.

It\'s a voracious predatory catfish that prowls the rivers of Southeast Asia. Growing up to 6 feet long and weighing more than 175 pounds, the wallago catfish is a pure carnivore, equipped with formidable jaws and a double band of saw-like teeth that are designed to attack. Seeking help from local fishermen, Zeb Hogan travels to the jungles of Malaysia, where wallago are rumored to swallow monkeys, porcupines and even monitor lizards.