Smile Dog began as a creepypasta image circulated online in the late 2000s, showing a Siberian husky in a dark room with blood-red eyes and an unnaturally wide, toothy grin. A short story claimed the cursed picture harmed anyone who saw it unless they spread it to others, which helped the image travel across forums and horror sites. Shortened into a two-second jumpscare, it later became a scream meme staple on video platforms, reused whenever creators need a familiar horror face and a sudden noise to startle an audience.