1.   Low-ranking male chimpanzees eat with the dominant females, who show no aggresssion towards them.

2.   Alpha male chimpanzees, the supreme rulers of the simian world, will break up fights between other chimps without choosing sides.

3.   ...Another time, Panbanisha and I were walking around the building where Sherman and Mercury, this male chimpanzee with a big interest in Panbanisha, lives.

4.   But male chimpanzees sometimes hunt at Gombe when no sexually receptive females are nearby, primatologists report.

5.   He cites the example of a female and a male chimpanzee at the Arnhem Zoo in the Netherlands.

6.   Stanford builds on this finding, saying that male chimpanzees often hunt as a way to finance their sexual barter when traveling with sexually receptive females.

7.   Then, suddenly, a chorus of male chimpanzee hoots shattered the tranquillity of the forest.

8.   Time after time, Stanford documented how male chimpanzees dangle a dead red colobus monkey in front of a sexually swollen female, sharing only after first mating.

9.   We once wanted to introduce three male chimpanzees into one of our colonies at Yerkes.