The phrase guau, dice mi perro comes from Spanish internet humour, where guau is the Spanish equivalent of woof and the joke is to present a bark as if the dog is speaking. Short pet sounds travel easily on meme pages and messaging apps because they need no translation beyond the bark itself, and this clip fits that pattern: a brief, recognisable animal sound paired with a caption-like title. Its appeal has lasted because dog owners keep making the same joke in new videos, using the bark as a reply, a reaction or a playful interruption.