SPOILER: Near the end, when Robert has Damien in the car in his driveway, scenes of the Rottweiler and Mrs. Baylock attacking one more time were filmed but ultimately cut. Originally, Robert killed her by running her over with the car twice. Director
Richard Donner says he cut it because the scene "went on forever." However, the idea was later loosely re-used for the 2006 remake,
The Omen (2006).