The clip spread online as a viral meme built around the joke of a Chinese dog singing with a man, as described in its original shared caption. Rather than a known film or song source, its appeal comes from resharing the short duet as a reaction sound on meme pages and pet edits. The repeated au au au became the recognisable hook people search for by name, and the humour of an earnest dog performing like a singer has kept it circulating in short video remixes.