Trivia: In the scene where Marty the Zebra is building his shelter, Alex gets jealous and looks to a basketball with a handprint face with grass for hair and says, "Shut up, Spalding". This is a reference to the film Cast Away, in which Tom Hanks' character, Chuck Noland, starts talking to a Wilson volleyball and gives it the name "Wilson."
Trivia: The movie references the novel "The Lord of the Flies" several times: They land on an island and quickly split into two groups. One wants to signal for help, and the other wants to stay on the island. A line is drawn between the two sides. The dead parachuter in the trees is the directly-channeled "beastie" in the book. Maurice assumes the floor in the meeting by blowing the conch shell.
Trivia: In the German and Dutch translation, the chimps go to hear (and throw poo at) Hillary Clinton.
Trivia: When Phil the monkey signs the words "ship to wildlife preserve Kenya," he starts with "tell the stupid bird it says".