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24th October 2015
06:56pm BST

Apparently, this is evolutionary - and the hyoid bone is directly linked to the monkey's social setting.
Monkeys that live in a community where one male is having sex with several females were found to have smaller balls but larger hyoid bones.
According to Women's Health, scientists claim that monkeys who live in these harem-style situations may use their deeper cat-calls to attract more females and scare off other males.
Study author Leslie Knapp, explained that it is difficult to make a comparison between monkeys and humans, as humans have much smaller hyoid bones.
We'll still be producing the study next time we're cat-called.Explore more on these topics: