Y. COPPENS: Yes. For example, as men, sometimes a chimpanzee and another chimpanzee disagree. In a clan gives the hierarchical competition rages. And, when clans are contiguous, they are assaulting each other and hold up night patrols to monitor the borders of their territories. They may even go to war..

Another surprising behavior. Claude Levi-Strauss, the incest taboo was the top of the characterization of man. Wham, in bonobos, a species very special chimpanzee, like man and woman can mate face to face, girls are leaving the group and go for the males in a neighboring group. It is a tendency to exogamy.

The chimpanzees, who use tools, even if they are not manufactured intentionally, are also developing crop. Frederic Joulian, who studied a group of chimpanzees in the Tai Forest, Cote d’Ivoire, found that cracking nuts, while neighboring groups did not do. In his thesis, he described a pile of broken shells and was able to prove that this practice could go back four hundred years, which requires a transmission of this culture technique from generation to generation and thus learning, the education of young.

Y. COPPENS: Helene Roche, a large Prehistorian tells us that no monkey has ever, in nature, produces a tool with another tool. Certainly, there are well Antwerp Zoo chimpanzee that a small size stones to make them sharp, but it was initiated by man.


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