Scooby-Doo first appeared in the Hanna-Barbera cartoon Scooby-Doo, Where Are You!, which debuted in 1969, and the cowardly Great Dane quickly became a cultural favourite alongside the Mystery Inc. gang. His distinctive chuckle has been clipped, remixed and reused for decades, moving from television reruns into online videos, reaction edits and meme soundboards. It endures because it is instantly recognisable across generations, needing no explanation, and because its nervous, playful tone fits both spooky jokes and everyday fails.