Trivia

When this movie premiered in East Germany, the sentence "The wall comes all around the estate to keep them out, and keep us in" caused a roar in the audience. It was omitted in subsequent screenings.

Andie MacDowell's voice was dubbed by Glenn Close.

With a fifty-person crew and forty wigmakers, Rick Baker's workshop became an ape-suit factory, turning out numerous finished suits in assembly-line fashion, in about eight weeks per suit. The suits were far from identical, however, because the script dictated that several of the apes had to be distinguishable as characters. A few even aged over time.

The ape suits were so thorough, the actors had arm extensions that could be adapted for walking, hanging, or grasping as the scene required.

A group of actors, gymnasts, and circus performers trained eight hours a day for several months to play the apes. Stage 7 at Elstree was their workout gym with ramps, mock trees and limbs, and nets for falls.