Don't Torture A Duckling/Fun Facts

• Because of the film's controversial storyline, which criticized the Catholic Church, the movie was blacklisted and received a limited theatrical run throughout Europe and was never released in theaters in the United States. In 2000, Anchor Bay secured the rights and released the film for the first time in the United States on DVD.

• Composer Riz Ortolani reused a small segment of music from this film in his later composition for Cannibal Holocaust (1980).
• Lucio Fulci has said in numerous interviews that he ranks this movie as his most personal favorite of all the movies he directed in his career.

• While talking to Andrea (Tomas Milian), Patrizia (Barbara Bouchet) at a certain point says "A rose, by any other name". This is a quotation of Shakespeare's "Romeo and Juliet", but also the name of the episode of "Star Trek" (1966) where Barbara Bouchet has appeared in 1968: "By any other name" (Season 2, Episode 22)