As if you need a degree in Rocket Science to figure this out.

Male monkeys pay to see female monkeys butts

Of course Monkeys pay to see this. If they could have figured out the printing press a million years ago, there would have been monkey porn newsstand. Every male of every species is like that. If male whales could pay to see female whales they would! Men are dogs. There's a reason why the porn industry cleared 10 Billion dollars last year.