Rufus has been dreaming of getting a dog. His best friend has one. His worst friend has one. But his dad has a few objections: They whine. They gnaw. They bark. They scratch. They beg. They drool.
Rufus pays no attention when his mom offers her think-outside-the-box suggestion, because she can't be serious. She can't be.
She can be. And she actually comes home with a guinea pig. And if Rufus's dad thinks dogs are a problem, he won't know what hit him when he meets the Guinea Pig that Thinks She's a Dog. She barks. She bites. She'll eat your homework.

New in paperback, the second of an award-winning, hilariously funny middle-grade series about guinea pigs who act like other pets will move its author, Patrick Jennings, into the ranks of much-loved writers, such as Louis Sachar and Andrew Clements.
When Rufus goes back to school, he learns that he and his guinea dog, Fido, are now celebrities. All his classmates want to see his pet, and some of them (the horrible Dmitri) even want to buy her. Rufus hates the attention so much he decides to remake Fido into a regular guinea pig, but then she disappears Did she run away, did one of the...