http://news.bbc.co.uk/earth/hi/earth_news/newsid_8659000/8659411.stmInteresting piece, considering that these guys are genetically only a few chromosones short of a job in the legal career...
Strange creatures the Bonobos, very open sexually, down to what would be described as paedophlia and incest in human societies, and yet the least violent form of ape, often choosing to use sex to solve an argument, rather than physical rebukes. It's suspected (by genetic science) that Humans are cousins of the Bonobos, who were more aggressive, possibly because human society tends towards Patriarchial, whereas Bonobos are Matriarchial.
Still, I found it fascinating to watch
As noted in the report, not all human cultures actually use a shaking head for 'No', but the head gesture in one direction or the other to affirm or deny something
does seem to be universal, like laughing.
