This clip is a generic stock animal effect, credited in its file metadata to a sound-effects library rather than to a specific movie, show or viral video. Cat hisses have long been a staple of sound libraries because the sound is instantly recognisable and needs no context to convey hostility or alarm. On soundboards and in short-form editing, the hiss is reused as a reaction noise for pets, pranks and exaggerated arguments, which keeps it circulating long after any single upload. Its brevity also makes it easy to drop into memes and edits without disrupting dialogue or music.