If Gerald McGrew ran the zoo, he'd let all the animals go and fill it with more unusual beasts--a ten-footed lion, an Elephant-Cat, a Mulligatawny, a Tufted Mazurka, and others.

A.J. and his fellow third-graders from Ella Mentry School, including new student Alexia, go on a field trip to the zoo, where they meet a very strange zookeeper.

When his sister disappears, Noah, along with their best friends, Ella and Richie, sneak into the neighborhood zoo and delve into the unknown world of the animals, where they discover a great secret that the zoo is protecting.

Newest zoo resident Pip is the cutest penguin chick Zoe has ever seen. But there's something strange about Pip. He doesn't seem to know he's a penguin!

Curious George visits the zoo and manages to both cause trouble and make up for it in his inimitable fashion.

Little T remembers that she was frightened last time her family visited the zoo but not why, so her creative family helps by imitating animals from A to Z until she recalls exactly what caused her fear.

Dink, Josh, and Ruth Rose investigate the kidnapping of the new baby panda at the petting zoo.

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

"An electrifying novel about the primal and unyielding bond between a mother and her son, and the lengths she'll go to to protect him. The zoo is nearly empty as Joan and her four-year-old son soak up the last few moments of playtime. They are happy, and the day has been close to perfect. But what Joan sees as she hustles her son toward the exit gate minutes before closing time sends her sprinting back into the zoo, her child in her arms. And for...

The zoo isn't what it used to be. It's run down, and Hippo hardly ever gets any visitors. So he decides to set off for the outside with his friend Red Panda. To make it in the human world, Hippo will have to become a Hippopotamister: he'll have to act like a human, get a job, and wear a hat as a disguise. He's a good employee, whether he's a construction worker, a hair stylist, or a sous chef. But what he really needs is a job where he can be himself....