In this delightful story Mommy has a surprise for Caillou: his very own potty Though initially uninterested, Caillou eventually decides that he wants to be a "big boy" and leave his diapers behind. After several attempts, a few failures, and near misses, Caillou learns to ask for the potty when he needs it and is rewarded with a sense of accomplishment and independence. Written with input from child psychologists, the Hand-in-Hand series of books...