# The special effects in the film were so realistic that director Ruggero Deodato reportedly had to go to court and prove that it was just make-up and fake blood and guts.
# The animal slaughterings in the movie were real, which resulted in the movie's being banned in its native Italy.
#The film caused some scandal in Italy at the time, and had trouble with the censorship board. There was a rumor that the performers had really been slain, so director R'uggero Deodato' had to take the actors with him to the set of an Italian TV show in order to prove that they hadn't been eaten alive.
Från:
http://www.imdb.com/title/tt0078935/trivia