Baboon mothers with bigger bottoms didn't have a better chance of raising babies that survived past infancy, the researchers found, once they accounted for other factors, such as age and rank in the pack. The bigger-bottomed baboons didn't attract more males, either, the researchers report in the June issue of the journal Animal Behaviour. Original article on Live Science. The biggest change was a swelling of 6. Like humans, baboons are not as fertile while nursing infants, so it might behoove males to wait a few cycles to mate. They used a zoom lens and digital calipers to measure 34 wild female baboons' swollen rumps down to the millimeter. The smallest was 4 inches 10 cm in a female dubbed Lollipop.
Briana. Age: 22.
Evolutionary psychologists have even argued that human males share some of the love of red that drives our primate cousins, suggesting that red lipstick and clothing mimics the function of a red baboon butt.
Jasmin. Age: 23.
Big Butts Can Lie: Bootylicious Baboons May Not Be Most Fertile
But this spread had less to do with infant survival or mate attraction than the researchers expected. Fitzpatrick and her colleagues wanted a precise measurement of female rump swelling, to see if bigger bottoms did, in fact, correlate with more mating and infant survival. Baboon mothers with bigger bottoms didn't have a better chance of raising babies that survived past infancy, the researchers found, once they accounted for other factors, such as age and rank in the pack.