An unobservant zookeeper is followed home by all the animals he thinks he has left behind in the zoo.

A librarian named Mavis McGrew introduces the animals in the zoo to the joy of reading when she drives her bookmobile to the zoo by mistake.

Twelve-year-old Teddy investigates when a popular Texas zoo's star attraction--Henry the hippopotamus--is murdered.

Teddy Fitzroy must solve the crime of the kidnapped rare and expensive panda, Li Ping.

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...

"Can you catch the unicorn? You'll have to use your brain. So set your traps and prep your team to pet that rainbow mane!"--

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.

When the winter doldrums arrive at the zoo, a very small hippo and a young kangaroo decide to stage a "ZooZical," a show to display their singing, dancing, acrobatic, and other talents to the people of Springfield.

"When a leopard goes missing at the San Diego Zoo, it's up to Dink, Josh, and Ruth Rose to find her!"--

A seven-year-old shares her colorful balloon collection, acquired one at a time, with zoo residents.