Caillou discovers the feeling of accomplishment during potty time in this whimsical tale. When he decides to be a big boy and move on from diapers, his whole world brightens up. Suddenly, he is overjoyed with a sense of achievement. Toddlers learn about a key developmental phase of childhood in this lovely book.

• Author/Illustrator: Sanschagrin, Joceline; Brignaud, Pierre (ILT)
• Hardcover
• Reading level: Ages 2-4 years
• Publication date: 7/19/10
• 24 pages