Cujo

Cujo is a killer dog from the book Cujo, written in 1981 by Stephen King. Cujo also is the main character of the movie Cujo based off the novel. When the St. Bernard went into a cave and got bitten by a bat, he got rabies (since he had no vaccinations). He then goes on a rampage, seeking out human flesh, and killing people! At first nobody realizes that Cujo is extremely dangerous, but when they do, a brutal battle of life and death occurs in the small town of Castle Rock, Maine. When two of Cujo's owners encounter Cujo in his murderous state, they fight him and manage to survive and end up killing the dog.