The sound comes from Dubidubidu, a cheerful children's pop song by Chilean singer Christell Rodríguez. Years after its original release, the chorus was picked up on TikTok, where creators paired it with videos of cats dancing, spinning and reacting to the camera. The pairing turned the song into a shorthand for cute, chaotic pet humour, and edits spread quickly across short-form video and meme pages. It remains popular because the nonsense lyrics are instantly recognisable, easy to lip-sync and perfectly matched to short, silly animal clips.