The tigers of the Sundarbans Forest in Bangladesh have been attacking villagers. Biologists enlist street dogs along with an expert dog trainer to help defend the village.
Herpetologist Romulus Whitaker investigates an epidemic that has been killing the world's oldest crocodilian, the Gharial.
Biologist Mark Bowler explores the illusive red uakari monkey and the key to their survival in the Peruvian Amazon.
A look at two cheetah mothers as they protect and care for their young cubs in the Tanzania's Serengeti.
Ecologist Dr. Mike Chase investigates the migration path of elephants in northern Botswana.
Six orphaned African wild dogs, also known as painted dogs, are released from captivity onto an island in an effort to have the pack learn how to survive on its own natural instincts.