Spaghetti Western Trivia ~ Who Let the Dog Out?

During the scene right before the final duel where Tuco (Eli Wallach) is running frantically through the cemetery, a dog can be seen running on-screen at the beginning of the scene. In reality, that was improvised on the spot. Sergio Leone, who was afraid that the scene was going to slip into melodrama, released the dog without informing Eli Wallach first--thus, his look of surprise is quite genuine.