1.   But for all the discrepancies in prospects that are tied to social status, female chimpanzees appear indifferent to displays of power.

2.   Female chimpanzees are sexually promiscuous, with or without meat, copulating with more than a dozen males each day.

3.   Female chimpanzees, at the more libertine extreme, were known to play the field, but supposedly only with males from their own social group.

4.   In leaving the community for foreign affairs, female chimpanzees take considerable risks, Gagneux said.

5.   It turns out that female chimpanzees rove much farther in quest of sexual novelty than had been suspected.

6.   OK, so maybe nobody ever accused female chimpanzees of being the virtuous Penelopes of the forest.

7.   So now four of the seven adult female chimpanzees at the Los Angeles Zoo are taking birth control pills.

8.   Suddenly a female chimpanzee named Siri bares her teeth, leaps onto the side of her cage and begins violently shaking it.

9.   That discrepancy is thought to arise because female chimpanzees are promiscuous, while female gorillas tend to mate solely with the silverback male in whose harem they live.

10.   They are not about to win any awards for being chaste homebodies, but female chimpanzees, it seems, are satisfied with chasing after the bodies back home.