Till lately, the human being has thought that the process of manufacture of tools was a quality that distinguished us of the rest of animals and that based in our intelligence. Nevertheless, in the last years has been able to check that mandriles, orangutanes and chimpanzees and, included, some birds, have the capacity to realise also processes of manufacture of tools.
The last experiment realised with bonobos in Israel (University of Haifa) have given us to understand that this species is able to manufacture these utensilios of the same form that did it the first hominids.
This experiment consisted in facilitating food in the interior of distinct trunks sealed entirely to observe the way to proceed of these primates to obtain it. The result was that in principle they extracted it with the use of the strength, but to the cape of several attempts, opted by a more sophisticated system. Kanzi Is his name and treats of a bonobo of 30 years that created a special tool with which can extract these foods of the interior of the trunk.
Whereas the mate so only achieved to extract the food of two of the trunks, Kanzi, thanks to the utilisation of branches that inserted in the sewings of the trunk and struck with stones, coin and scrapers, attained to extract it of until 24.
This bonobo already was known by his capacity for learning the language of signs and use specific sounds to way of words to refer to concrete things. It is something as well as a bonobo superdotado.
Both bonobos finished using tools to achieve his aim, but only the manufactured by Kanzi had an incredible similarity with the used by the primitive men.