Humphrey, pet hamster at Longfellow School, learns that he has an important role to play in helping his classmates and teacher.

Humphrey the classroom hamster has adventures going to the library, learning about the ocean, and sailing across a pond on a sailboat.

Humphrey the hamster and the students in Mrs. Brisbane's class get ready for the holidays and a special Winter Wonderland program.

When Humphrey the hamster returns to Mrs. Brisbane's class after the winter break, a new class pet and some other surprises give him an opportunity to reflect on the meaning of friendship.

Humphrey the hamster is excited to return to room 26 on the first day of school, and though he is at first shocked to see an all new group of students, he soon comes to know and love them, and gets understandably nervous when he hears talk of moving him from Mrs. Brisbane's room.

Og the frog is a classroom pet who is living the high-life with children who feed him fat crickets and a fuzzy hamster as his next-door neighbor. But one day, there is discussion about returning Og to the swamp. Not wanting to be bullied by the bull frogs or deal with snakes, Og decides to make himself the best class pet ever.

"In the seventh Super Turbo book, visiting a student's home sounds harmless... until Super Turbo meets the Cat-Nappers! As the class pet hamster, Turbo is simply delighted to learn that he'll be going home with a new student each week. He loves his second-grade students! But his delight disappears when he arrives at the first student's home. That's because a bunch of lazy, napping cats turn out to be the dreaded Cat-Nappers!"--Amazon.com.

After learning about Sherlock Holmes, Humphrey the classroom hamster follows clues to try and discover why Mrs. Brisbane is gone and Mr. E., a fun but not very educational substitute, is taking her place in Room 26 at Longfellow School.

Third-grader Katie Carew feels torn between her two best friends, but after wishing she were someone else, she morphs into Lucille, the lunchroom lady, and experiences life from the other side of the counter, with unexpected results.

The last member of a line of explorers, unfailingly optimistic Pigsticks hires a hapless delivery hamster named Harold to be his companion for a quest that wends through jungles, deserts, and mountains in search of the Ends of the Earth.