Trivia: In the scene of Missy's funeral, Stephen King plays the priest.
Trivia: At the beginning of the movie when it shows the pet graves in the Pet Sematary there is a grave that says, "Smucky the Cat, he was obedient." Smucky the Cat was actually Stephen King's daughter's cat that was killed.
Trivia: George A. Romero was originally set to direct; but when filming was delayed, he dropped out, and Mary Lambert stepped in.
Trivia: Stephen King got the idea for Pet Sematary after his daughter's cat, Smucky, was killed. She was heart-broken and King thought "What if he could come back?"
Trivia: Originally the fate of Louis Creed was meant to be more subtle and open - his deceased wife Rachel was to walk into the kitchen and discover him alone and end there; in the film, a grotesque Rachel embraces him while grabbing a knife and we hear his scream just when the screen fades to black.
Trivia: Fred Gwynne, who had played the lovable monster dad Herman Munster on The Munsters, here plays the huge elderly neighbor Jud Crandall, who is well aware of the strangeness of the cemetery.
Chosen answer: Church's behavior had changed after being buried. He was now violent (and working with Gage) and needed to be put down before killing anyone.
Bishop73