Surely we all know that men with big feet have, well, big shoes because there really is no correlation between the size of men's feet and the size of their penises. What does have a connection is that men who make more noise may have smaller testicles.

Don't raise your eyebrow or close your browser just yet because that is scientifically confirmed.

Dr. Jacob C. Dunn and his team of researchers published the results of their study titled "Evolutionary Trade-Off between Vocal Tract and Testes Dimensions in Howler Monkeys" where they found that, when it comes to reproduction, these primates can only have either a bigger and deeper voice for mating calls or bigger balls for a more abundant supply of sperm. Another thing: the males with smaller balls tend to stay silent until they sense a female and go all out with their ruckus. Does that sound familiar to anyone?

First, watch Dr. Dunn in the video below as he briefly explains what their study was all about.

How about watching the video below to give you an idea?

Those catcallers share a similarity with those noisy monkeys, don't they?

"Those scientists worked with monkeys," "that can't be extended to humans," "that's too big of a leap" is probably what some are thinking right now but let's be honest here, the males who catcall are trying to get the attention of females in whatever way possible and it just so happens that their method is similar to that of the noisy howler monkeys with small balls. Considering that humans and monkeys are primates, that's saying something. No one claims that study extends the same evolution to human males but there is a suggestion, and a very strong one at that.

We have all heard the analogy on how men with small penises overcompensate with big and expensive cars, though many would deny it since men just really love their fast toys in general. Perhaps the next study could be about primates and the size and price of toys they choose.

Photo: Jeffrey Zeldman | Flickr

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