Come to think of it, maybe we aren't all that different from chimps. Quite a few of the boys took their wives out for a steak dinner on Valentine's day. Maybe we should take notes. ;)
The oldest profession isn't restricted to humans. A new study found that wild chimpanzees exchange meat for sex.
By stealthily following a group of about 20 adult chimpanzees in Côte d’Ivoire's Taï National Park, behavioral ecologists Cristina Gomes and Christophe Boesch of Max Planck Institute for Evolutionary Anthropology in Germany carefully noted which male chimpanzees copulated with which females. The researchers found that she-chimps put out more often for males that shared food with them at least once, compared to stingy males who never offered meat.
Apparently, buying dinner is a good way to improve the chances of getting lucky on a date, even if you're a chimp.
The primates' food-for-sex barter occurs indirectly, over the course of weeks or months, with males seeming to accrue credit with the ladies by plying them with meat killed on a hunt.