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.
- Genre: Juvenile Fiction
- Subgenre: General, School + Education, Humorous Stories
- Age: 9-12 years
- Publisher: HarperCollins Children's Books
- Pages: 105
- Language: English
- Format: paperback
- Release Date: June 21, 2011
- Date Published: June 21, 2011
- Author: Dan Gutman
- Illustrator: Jim Paillot