Scooby-Doo originated in the animated television series Scooby-Doo, Where Are You!, which premiered in 1969. The character was originally voiced by Don Messick, whose performance established Scooby’s distinctive vocal mannerisms. Short clips of the dog’s laugh later became useful reaction audio for video edits, memes, and nostalgic cartoon posts. It remains recognizable because the chuckle quickly communicates harmless mischief and comic suspicion. Similar animated reaction formats, such as the SpongeBob time card, also remain popular for creating instantly understood punchlines.