The exact origin of this clip is not tied to a known show, film or character, and it circulates mainly as a standalone soundboard clip with a Japanese title that pairs the barking sound wanwan with the word for roar. That naming has helped it travel through animal videos, reaction edits and meme compilations, where creators reuse it as a shorthand for a small creature acting far tougher than it looks. Its appeal is simple and repeatable, so it keeps appearing whenever a joke needs an instant, over-the-top animal outburst.