Cats often chirp or chatter when they watch birds through a window, and short recordings of that behaviour have become a staple of pet reaction content online. Because the sound is so unlike a normal meow, it is shared in animal compilations, funny pet edits and reaction videos where the surprise is the point. With only a couple of seconds of audio, it is easy to reuse across short-form videos, memes and chat replies, and it remains popular because it feels authentic, instantly recognisable and endlessly repeatable in a new context.