While chimps remember faces as well, new research has found that the primates recognize the buttocks of their kin just as well as humans recall familiar faces. Not only that, but our hairy relatives also seem to utilize the same type of brain processing for their neighbor's butt that humans use to spot a familiar face.
The ability to recognize one another is important for social animals. For humans, the face offers important information beyond identity, such as attractiveness and health. For chimpanzees, their buttocks can serve the same purpose . For instance, chimps can determine if the rump they see belongs to a relative or to a female that is ovulating.
Read full story : http://www.livescience.com/57127-chimps-can-recognize-butts.html
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