When Fluffy the class guinea pig goes home with Wade for the weekend, Wade loses a tooth and Fluffy learns about the Tooth Fairy.

"When Pedro admits that he has a paralyzing fear of water, his friends try to cheer him up with a pet. Only this one won't leave the water! The third installment of the Guinea Dog series"-- Provided by publisher.

Guinea pig Sasspants knows something is wrong with ninth-grader Viola, the new pet shop assistant, so when Mr. Venezi goes missing Sasspants and Hamisher put their private investigation skills to the test.

"The laughs continue when Fido, the guinea pig that thinks she's a dog, has a pup that thinks she's a squirrel. A sequel to Guinea Dog"-- Provided by publisher.

When guinea pig Sasspants leaves Mr. Venezi's pet shop to live with Detective Nichols, and hamster-detective Hamisher retires, the case of the missing bookstore cat must be solved without their help.