Bao Bao, the baby panda at Smithsonian's National Zoo, is celebrating her first birthday. Giant pandas are endangered and less than 2,000 remain on Earth, making Bao Bao's very existence special and the act of raising her all the more critical. Track her evolution with her caretakers, from a scrawny 4.5 oz. cub to a playful 40 lb. bear who spends her days scaling trees and devouring sweet potatoes. And learn about the bittersweet transition that Bao Bao will undergo when she leaves her mother's care and grows into independent adulthood.