Zoo Sus circulates as a short user-shared meme sound rather than a clip tied to a clearly documented scene, and that ambiguity is part of its appeal online. Creators reuse it as a shorthand for calling something out as suspicious, borrowing the familiar sus joke that spread through gaming and short-form video culture. Because it is brief and instantly readable, it travels easily between reaction videos, animal edits, and comedy clips, where it adds a quick punchline without needing context or a setup.