I consider Cujo the novel to be one of the lesser Stephen King works and am overall just not much of a fan of it. Cujo the movie I'm quite fond off however. It trims away so much of the book's fat. Excising all the pointless subplots and superfluous padding in order to focus solely on the domestic drama and rabies-induced terror. It's a leaner, meaner, and all around better way to experience the story as a result. Improvements were even made to the ending. The characters are a little underdeveloped though. We never really get to learn who they are so it's impossible to legitimately care about them. This hurts the main plot thread involving the infidelity of Dee Wallace's character. Given that there's no exploration of why she would cheat on her husband, it and everything involving her lover Steve Kemp feels like it should have been left on the cutting room floor. As for Cujo's owners, the things going on in the Camber's household are only vaguely hinted at and will likely confuse those unfamiliar with the source material as a result. All in all, none of this is really a big deal though. This is a Stephen King flick so we're all just here for the action anyways. In that department this is easily one of the author's most effective adaptations. It's the only movie I've ever seen that even comes close to capturing the same kind of tension that can be found in Jaws. It does get a little repetitive at a certain point watching Cujo repeatedly assault a broken down car with the hopes of mutilating the protagonists inside, but it doesn't take too long for the film to switch gears and return you to that edge-of-your-seat anticipation with excursions outside of the vehicle. The St. Bernard himself is a terrifying beast whose gradual degradation is excellently telegraphed by an ever-increasing coat of muck and grime. The actual plot may be a little weak and underwritten, but the situation at the core of it all is intense. A naturalistic horror film that makes "man's best friend" more terrifying than any ghost, ghoul, or monster. Thanks to a noticeable axing of so much of the source material's more unnecessary story beats, it's also one of those rare movies that's better than the book it's based on.