Scientists have found that male chimpanzees prefer older female mating partners:
An anthropologist at Boston University, Martin Muller, and his team studied chimpanzees living in the Kanyawara community of Kibale National Park in Uganda and observed that male chimps always preferred the oldest among the females, while the young females will have to beg for masculine company.
The team's findings are reported in the journal, Current Biology. The thrust of their study has been to find out whether chimpanzees behaved like humans in sexual activities like establishing long-term relationship and the male preference for younger females.
Muller says this is not the case with the chimps. The oldest among the females have the highest value in terms of sexual preferences. The males were found to be fighting over them more, he wrote.