That “guilty dog” look is the product of millions of years of evolution and is actually a sophisticated social communiqué. … More Borrowed Signals: A Discussion of the “Guilty Dog” Look
The “pain grimace” is quite similar in many mammals, but where did it come from and why do we do it? … More Why do We and Other Animals Wince When in Pain?
(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
Summary The shape and structure of the human face varies much more among individuals than do the faces of other species, even compared to species that have far more genetic diversity. The shapes of human faces vary more in the population than does any other physical feature. This high degree of facial diversity, which cuts … More The Stunning Diversity of Human Faces