Cancer theory Edit
Why is Caillou bald? People have wondered about this for years. And why are his parents always so calm? Why is he so whiny? Either his parents are obsessed with kid fashion, abuse him by shaving his head or just....
Caillou was actually a child with cancer. The reason why there's always a white frame border in the show is because Caillou is on his death bed and the stories are Caillou's fantasies of his ideal life or just flashbacks. Caillou's cancer could also be the reason his parents spoil him because they want to give him happy memories before he passes away and they feel guilty of punishing him because of his disease.
Or in another way, Caillou died before the series started and the narrator is simply telling stories of her grandson to the two kids (the girl could actually be Rosie older and she's unlikely to remember her brother being alive).
Éditions Chouette have mentioned that the true reason Caillou is bald is because is originally was a baby in the books, and they wanted to keep him bald to identify with all children. However some just don't believe it straight.
Furthermore, the original voice actress of Caillou, Jacklyn Linetsky, died in a car crash in 2003.
Meth theory Edit
Adoption theory Edit
- Rosie has orange hair either because she's adopted and Caillou's parents did not want to get another child with problems; or one of the parents was more of a redhead when she was younger and her hair became darker; or Rosie'e red hair gene could have been passed by grandparents.