(A longer discussion of animal communication can be found in my book.) Mandrills are, literally, one of the most colorful creatures on earth and certainly the most colorful primates. Their striking faces are matched only by the bright coloring of their hindquarters. (Their genitals are colorful, too, if you must know!) The coloring is part … More The Birth of a Cultural Meme: The “Do Not Disturb” Gesture in Mandrills