Little reliable information is published about the original recording behind this clip, beyond its name linking it to a dog called Pavlov and its circulation as a meme sound. That uncertainty has not slowed its spread on soundboards, where its half second length makes it easy to replay, share and drop into edits. It belongs to a wider family of exaggerated animal reaction sounds used for shock humor, similar in spirit to other abrupt cartoon style noises that punctuate a visual gag rather than carry a scene on their own.