Japanese Macaque monkeys groom each other, sitting in a hot spring in the snow at Jigokudani Wild Monkey Park in Yamanouchi, Nagano prefecture, central Japan. Male macaque monkeys pay for sex by grooming females, according to a recent study that suggests the primates may treat sex as a commodity, AP reports.
“In primate societies, grooming is the underlying fabric of it all,” Dr Michael Gumert, a primatologist at the Nanyang Technological University in Singapore, said in a telephone interview on Saturday. Gumert found after a male grooms a female, the likelihood that she will engage in sexual activity with the male was about three times more than if the grooming had not occurred.
