Pop Cat grew from a short video of a pet cat opening its mouth, which editors looped and synced to a popping sound in 2020. The format exploded through clicking games, remixes and edits where the cat's mouth was timed to songs, voices and game sounds. Singing versions stretched that idea, matching the open and close motion to meows and melodies. It remains popular in Roblox, Minecraft and Sonic fan edits because the visual is instantly readable, easy to loop and works even without any context about the original clip.