The British Board of Film Classification had received complaints about this movie for over four decades after its release, due to the board's decision to classify it U (suitable for all). The BBFC admitted in 2012 that it had "received complaints about the suitability of Watership Down at U almost every year since its classification". On August 4, 2022, the film was re-rated PG after 44 years.
Was originally directed by John Hubley, who died in 1977. He and his wife Faith's work can still be found in the movie, most notably in the "fable" scene.
The first animated movie to be presented in Dolby Stereo in theaters.
Most of the locations in this movie either exist, or were based on real places in Hampshire, England, and surrounding areas.
Sir John Hurt and Richard Briers (who played Hazel and Fiver, respectively, in this movie) returned to voice General Woundwort and the new character, Captain Broom, respectively in La pradera de los sueños (1999), a television series adaptation of the book.