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

Thirteen-year-old Teddy Fitzroy and his girlfriend, Summer, investigate when a mountain lion is accused of killing a prized dog outside of FunJungle Wild Animal Park in the Texas Hill Country.

A boy and his pet dragon visit the zoo and see a wide variety of animals.

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

"When twelve-year-old Logan Wilde wakes up to discover a baby griffin hiding under his bed, he suddenly finds himself thrown into a mystery involving his classmate Zoe Kahn and a magical menagerie right in the middle of his sleepy Wyoming town"-- Provided by publisher.

Twelve-year-old Lexington, a foundling raised in a zoo, spends a summer cementing friendships, growing closer to the elephant that saved her life, and learning about her family and herself.

Anxious to see what life is like outside the zoo, Sammy the seal explores the city, goes to school, and plays with the children but decides that there really is no place like home.

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 Splat the Cat and his class take a school trip to the zoo, all Splat wants is to see the penguins"--

Although at first he plans only to exhibit the Pushmi-pullyu, John Dolittle soon becomes manager of a very special circus.