Cujo/YMMV

Fridge Horror: The father comforts Tad by reciting how no monsters can fit in his closet or under his bed. Wouldn't that backfire if Tad realizes that the Things That Go Bump in the Night must therefore be really freakin' big?
Nightmare Fuel: Trapped in a car, with a rabid St. Bernard lurking around, and meanwhile, your four-year old son is going into seizures.
Paranoia Fuel: And how. Better make sure your dog's vaccinated...
What Do You Mean It Wasn't Made on Drugs?: Inverted: King actually was on drugs while writing the novel, but despite this, it isn't surreal or incomprehensible.
Headscratcher - Why didn't Donna, you know, call ahead to be sure anyone was at the place before driving all the way out there? Sure it was before cell phones, but generally people book appointments for such things.