National Geographic | Submitted by: Reid Fleming
"Females are the dominant sex in most primate communities. Far from being passive bystanders in a world governed by machismo, a new study suggests females may determine social evolution in primates... Scientists believe communal living is particularly beneficial to females because a ready food supply is crucial for successful reproduction. A primate 'sisterhood' would be better equipped to locate and defend food resources than individual animals."
Read Article
OH well ... I already knew this one!!!