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Something is wrong with Sammy, the beloved pet guinea pig of Ms. B's class, and no one is quite sure what to do. Readers can help Ms. B and the children as they try to figure out what is wrong with Sammy. Full color.

Sammy: The Classroom Guinea Pig 2008, Square Fish, New York

ISBN-13: 9780312379643

Trade paperback

Sammy: The Classroom Guinea Pig 2005, Henry Holt & Company, New York, NY

ISBN-13: 9780805040241