Wikipedia
Caillou
Caillou is a Canadian educational children's television series that was first shown on Télétoon and Teletoon, with its first episode airing on the former channel on September 15, 1997; the show later moved to Treehouse TV, with its final episode being shown on that channel on October 3, 2010. The series is based on the books by Hélène Desputeaux. It centres on a 4-year-old boy named Caillou who is fascinated by the world around him.
Caillou (book series)
Caillou is a Canadian series of children's books in 1965, created by Hélène Desputeaux and Christine L'Heureux but in 1986 Helene and Christine renewed him. From 1997 to 2010, a TV series was aired.