
One of the largest and most popular zoos in the U.S., Ohio's renowned Columbus Zoo and Aquarium and its conservation park The Wilds, houses more than 10,000 animals on 12,000 acres. It's also the part-time home of beloved wildlife guru Jack Hanna, the zoo's director emeritus. Nat Geo Wild is taking viewers inside the grounds and allowing them to experience what visitors can't: compelling, heartwarming stories, and behind-the-scenes moments and adventures. "Secrets of the Zoo" introduces both the animals and the legions of workers who create unforgettable connections between people and wildlife.

The keepers set out to make their early morning breakfast rounds at the Heart of Africa exhibit, long before the gates open to guests.

The zoo comes down with a case of baby fever as a cheetah repopulation program finally goes into full swing.

The staff at the Columbus Zoo can hardly contain itself as it prepares to make a home for an orphaned baby gorilla.

A penguin stuck in molt for a year hopes to see the last of his bad hair days; Dr. Priya gets a human heart specialist to help with Lady, a bonobo chimpanzee with a life-threatening heart condition.