This book series centers on a 4-year-old boy named Caillou who is fascinated by the world around him.

From joy to wonder, from mishap to delight, Caillou learns about the world around him.

Titles include:
Caillou 
- sleeps over
- goes to work
- rides on a plane
- The Hiding Place
-Rides a bike
- and Gilbert
- The circus parade
- Dress-up with Daddy
- What's that funny noise?
- Learns to swim
- the firefighter
- Happy Halloween
- Training wheels
- The jungle explorer
- Puts away his toys
- The School Bus
- The phone call
- and the Rain
- is Sick
- Walks his dog