The exact origin of Miemiou is not clearly documented, so the clip is known mainly through its circulation on soundboards and short video platforms. Its name is written to match the sound itself, which helps people find it when they search for the meow they heard in an edit. It spread as a reusable reaction rather than as part of a longer song or scene, and creators keep returning to it because a two second cute vocalisation can carry a joke, soften a fail, or give a silent pet an imagined voice.