This was just way too funny for me to ignore. It turns out that male monkeys pay for sex! Yes, folks, monkeys hire prostitutes. The weirdness of it all.
"...a group of about 50 long-tailed macaques in Kalimantan Tengah, Indonesia, traded grooming services for sex with females; researchers, who studied the monkeys for some 20 months, found that males offered their payment up-front, as a kind of pre-sex ritual. It worked."
http://www.time.com/time/health/arti...0.html?cnn=yes