Smile Dog

Smile Dog is a fictional supernatural entity which was the focus of the story Smile.jpg - which grew into an internet meme creepypasta in a similar manner to Zalgo, Jeff the Killer, Slender Man and alot more. Smile Dog is believed to be a demonic creature resembling a grinning dog which appears in a photograph, the victim often going insane or doomed to some horrible fate while the line "Spread the word" is revealed.

Smile Dog is normally depicted as a husky but it can also be depicted as a grotesque, incredibly horrifying red creature, which may be Smile Dog's "true form" - in all forms the trademark grin is noticable.