Scooby-Doo first appeared in the Hanna-Barbera cartoon Scooby-Doo, Where Are You!, which premiered in 1969, and the cowardly Great Dane quickly became known for his expressive grunts, whimpers and half-formed words. Short reaction sounds like this urr have travelled far beyond the original episodes, clipped from cartoons and shared in meme edits, reaction videos and short-form posts where a single confused noise says more than dialogue. Its brevity and instantly recognisable voice keep it useful for creators who need a fast, funny reaction without interrupting the visual joke.