Adapted from Stephen King's novel, 'Cujo' is a lean, harrowing horror film about a friendly St. Bernard that contracts rabies and turns into a slavering killer. Dee Wallace gives a fierce performance as a mother trapped with her young son inside a stalled, broiling car as the maddened dog lays siege for days. Stripped of supernatural trappings, its terror is primal and relentless. Well received as a taut, unusually grounded King adaptation, it endures as a tense, sweat-soaked survival ordeal.