Smile Dog is a creature from creepypasta. It appears in a picture as a Siberian husky with a human-like smile. It is said to give anyone who looks at it mental problems. The original version (top picture) shows Smile Dog in a dark room with a human hand to the left, while the more popular version (bottom picture) is set in a darker room with a red light showing through the window and with a more demonic face.said to appear in epileptic fits and in a person's sleep, telling them to spread the word, which simply means to let others know of its existence. If they do, it will leave them alone. However, if they choose to ignore Smile Dog, they will slowly descend into madness and eventually commit suicide to escape the torture.