Caillou began as a Canadian animated series that premiered in 1997, adapted from the picture books by Christine L'Heureux and illustrator Hélène Desputeaux. The show followed a curious four year old through everyday family life and was dubbed into many languages, including Spanish for audiences in Spain and Latin America. That Spanish opening circulated later on video platforms and soundboards, kept alive by viewers who first heard it as children and now reuse it in memes, edits and nostalgic posts about dubbed cartoons from the early 2000s.