 Scott Jacoby told Cosmopolitan magazine in 1977 that the hamster  they used in the cigarette scene was already dead, but that the shot  gave Jodie Foster the fits anyway. Foster went on record as saying  one of the producers on this film was "nuts", explaining that he  wanted her to show more skin and she refused. Foster had a terrible  time with the sexual scene upstairs with Mario. Although her older  sister did the shot, Foster was very upset that viewers would think  this was her and fought and cried with the producers, to no avail.