Jungle Jack is the completely revised and updated authorized biography of one of our most beloved zookeepers, Jack Hanna. When the Columbus Zoo hired Jack Hanna as executive director in 1978, he inherited an outdated zoo where all the animals were caged and the buildings were run down. With the kind of work ethic and enthusiasm he's become known for, Hanna brought new life to the zoo, transforming it into the state-of-the-art facility it is today...