When a unicorn decides to visit the zoo, a group of children do their best to catch it.

This book tells how zoo animals enjoy themselves after the last humans have departed.

Orville is a little penguin who lives in a zoo and dreams of big adventures, like going to the Moon; the other animals are skeptical, but Orville is determined, so he builds a spaceship and sets out all by himself--and discovers that real adventures are best when they are shared with friends.

Noah and his friends in the Secret Society join forces with four teens known as the Descenders to try to protect the Secret Zoo hidden below the Clarksville City Zoo from monstrous sasquatches and the evil Shadow Master.

For once, operations at the enormous zoo/theme park appear to be running smoothly (except for the occasional herring-related mishap in the penguin exhibit) and Teddy Fitzroy is finally able to give detective work a rest. But then a local lion is accused of killing a famous dog--and the dog's owner, an inflammatory radio host, goes on a crusade to have the cat declared a nuisance so it can be hunted. However, there's evidence that the lion might have...

The animals at the zoo have some unusual requests for a little girl who goes to visit.

Between the time the crowds leave the zoo and the zookeeper makes her rounds, the animals come out for a rousing game of basketball.

When Digger the dog and his big sister Daisy visit the zoo, Digger tries to imitate the animals they see and Daisy tells him that although he cannot climb a tree like a monkey, he can swim in a pond like a duck.

Cursed by an old carnival game, sixth-grader Rex Dexter uses his new ability to communicate with dead animals to investigate the mysterious deaths of endangered zoo animals.