When Rufus, Murphy, Lurena, and their pets go camping, they meet Pedro, a shy boy who seems afraid of just about everything - especially the water. One thing leads to another and the kids go into a nearby town to buy him a pet to cheer him up - a guinea pig, naturally. Yet what they bring home may look like a guinea pig, but it can swim like an otter!

First published by Egmont USA in 2014.