Male to Female Ratio on the list is 44:1
A few years back there was an experiment conducted with a group of chimps held in captivity at some zoo. Several toy cars were placed in the enclosure. The female apes did not show much interest in them, but the males were fascinated by the wheels going round and round.
The experiment was repeated this time with soft cuddly toys instead of cars. This time round it was the females that made for the toys.
The implication is that Males are genetically programmed to like things that can move.
(I don't have a direct link to the experiments but people from the UK will have seen this reference on 'A child of our times')