Caillou learns the difference between his imaginary fear of a wolf in the attic and reality.
Caillou is afraid there is a wolf in the attic. Dad explores the attic with him, so Caillou can see there is no wolf. When Caillou decides to play in the attic he asks his Dad to stay with him. Unfortunately, we cannot be sure if Caillou is still afraid or if he just wants his Dad to play. Parents could emphasize the latter view, and suggest Caillou is no longer afraid because he knows the truth.
Caillou learns that several everyday things require special care and respect.
We consider this a useful story because young children can see that Caillou learns –from just the right amount of experience– that standing on a chair is risky, handling snow without mittens is cold, and that the stove is hot. This is typical Caillou: bland, but it does create a means for opening a dialogue with your child about safety.