Trivia: Steven Spielberg has a cameo as one of the doctors when Elliot and E.T. are 'hospitalized' inside the house.
Trivia: Over the decades, one persistent Internet rumor maintains that the tiger used in the first Beastmaster film died a horrible, lingering, 2-year death from skin cancer as a result of having his entire coat dyed black with toxic chemicals. As usual for Internet gossip, the details of this story are dreadfully confused, at best. According to director Don Coscarelli (speaking during an interview with author Staci Layne Wilson for her 2007 book "Animal Movies Guide," page 350), the film's executive producer brought in an animal handler who chose to dye more than one tiger black. Just to be clear, none of the tigers became diseased or expired from the non-toxic black vegetable dye. It was necessary, however, to anesthetize the tigers before applying the dye to their coats; and, unfortunately, one of the tigers simply never woke up from the anesthesia (a known problem with cats). Coscarelli felt horrible about the unexpected death; but, in fairness to him, the decision to anesthetize and dye the tigers was not his choice.
Trivia: In almost every story told in the movie, there is an ashtray that is used as an ashtray, as a soap dish and as a place you can put lose change, rings etc. This is done deliberately by the director, it has become his personal trademark.
Trivia: Mrs. Brisby's eldest daughter was voiced by a young Shannen Doherty, later to become famous for her role as Brenda in "Beverly Hills 90210."
Trivia: The actors inside of the Skeksis had television monitors inside of their costumes, so that they could see where they were going.
Trivia: In the original book, the boy who's friends with the snowman isn't given a name. In the film he's given a gift by Father Christmas with a nametag on it, so the filmmakers opted for James, the husband of one of the animators.