(1981) had to leave some gore on the cutting room floor. While the film is famous for Rick Baker’s Oscar-winning effects, several scenes were removed or altered due to pacing, test screenings, or strict "R" rating requirements.
Yes, there is lost footage of Griffin Dunne in a full skeleton makeup suit, rattling his bones at David in the Tower Cinema. The dialogue was darkly comedic: "You think this is bad? Wait until my teeth fall out and I have to whistle for a cab." an american werewolf in london deleted scenes
Director John Landis removed it after test audiences reacted negatively. Some sources suggest the sequence distracted from the main story, much like the famous "Spider Pit" scene from King Kong . (1981) had to leave some gore on the cutting room floor
Where these appear (editions/features)