10 Horror Movie Monsters That Shouldn’t Work - But Do

10. Cujo - Cujo

Only the wicked and sinister mind of Stephen King could think about taking a creature so loveable as a dog and turning them into a horror story's hideous villain.

The original story of Cujo occurs after the friendly and sweet pup contracts rabies and proceeds to inflict a reign of terror over the small town he resides in. It almost feels like Old Yeller's revenge, and the movie adaptation did a great job of displaying the fear that this monster could bring.

While the idea of being attacked by a dog is not pleasant, it's hardly horror movie material. After all, dogs are man's best friend, and almost everyone loves them, so they shouldn't be scary, right? Wrong! Cujo is a horrifying creature and will have even the stoutest of dog people petrified.

More than just being a dog, the breed chosen happens to be that of a Saint Bernard. This is a breed that's widely known for its gentility and friendliness and often feels more akin to a giant teddy bear than a canine, which should make him even less scary, but it doesn't.

As always, King is a master at turning mundanity into terror, as this creature - that even under awful circumstances shouldn't be too intimidating - is transformed into a nightmarish beast.