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!

Pick up the latest installment of this award-winning, hilariously funny middle-grade series!

A Lerner audio production.