Hardcover Picture Book - Kids / Animals/Zoos. After the zookeeper goes to bed for the night, her animals decide it's the perfect time for a party! Lions and alligators, penguins and giraffes, creatures from all habitats sneak out for some late-night mischief. But when the party starts to get a little too wild, will the animals be caught in their tracks? Bouncy, rhyming, and filled with silly animal fun, Zzzookeeper is sure to become a new bedtime favorite.