According to director Marc Lawrence, at the film's theatrical premiere in Detroit, Michigan on May 23, 1973, the distributor offered free bacon to the audience as part of a promotion, most of which was quietly and cautiously returned after it was over.
Charles Bernstein did the score for the film in exchange for an oil painting that Marc Lawrence owned.
Marc Lawrence made hunks of bread in the shape of arms and legs for the scenes in the film in which the pigs eat human flesh.
The film was shot in eight days.
Marc Lawrence put a mortgage on his house in order to raise the money he needed to complete this film.