For years, Caillou has delighted Canadian kids and annoyed their parents . But one question has crossed our minds: Why is Caillou bald?

A long-existing urban legend is that the four-year-old boy has cancer, which is one of the reasons why his parents always let him get his way. However, this simply isnt true.

The TV series Caillou was actually based on a much younger character from an illustrated childrens book . In the story, Caillou was drawn as a nine-month-old baby. As he got older, publishers decided that giving the character hair would make him unrecognizable, so they decided to keep him bald.