chimp and bonobo societies dissent fundamentally . While males dominate among chimps , female are at the top of the hierarchy for bonobos , and raw research published inRoyal Society Open Sciencesuggests that this may be down to the savage war that chimps wage .

Despite chimpanzees having been known about in the westerly world perhaps for thousands of years , because of how standardized the two anthropoid mintage appear , the bonobo was not formally described as a disjoined metal money until 1928 . Since then , it has become ostensible that , despite experience in very similar environment and see morphologically alike , the two animals are strikingly unlike indeed .

“ While chimp male are highly territorial , with uncongenial and sometimes lethal intergroup encounters , bonobos have rather passive relationships between groups and miss lethal violence during encounters,”explainedMartin Surbeck , who take this late cogitation . Chimpanzees be given to settle difference through aggression , bonobos seem to do it through sex .

And it was this stark difference in behaviors that spur Surbeck and his squad on to figuring out what shock it has on their societies . It appears that part of the cause why the two apes ' social structures may be so dissimilar is down to the fact that chimpanzees wage what we call in human polish “ war . ”

After learn five separate groups of chimpanzees and two case-by-case group of bonobos , they found that this war may be the reason why Pan paniscus society are dominated by female , and chimpanzee communities are dominated by males . It turns out that while all chimpanzee groups were sexually segregated , with Male preferring to socialize with males , in the bonobo communities both the sex preferentially liked to socialize with female .

The researchers arguethat the war take note in one mintage and not the other can help to explain these social differences . chimpanzee need to cooperate with other male while they undertake edge patrols , hunting , and difference of opinion , and so may prefer to pass clip socializing with each other to strengthen these bonds . Male bonobos , on the other hand , are much less territorial , and alternatively look to their mothers to join forces with in monastic order to boost their rank in the hierarchy .

One of the most striking discoveries made about Pan troglodytes is their tendency towards violence . It is now fairly well known that the apes will brutally attack Pan troglodytes from neighboring communities , but in some compositor’s case , this is taken much further . One of the easily - known examples is theGombe Chimpanzee War , which take lieu over a menstruation of four years in the 1970s . When one mathematical group of chimps split , difference of opinion burst out , with one side systematically wiping out every single male from the other , and then making a land grab for their soil .