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One of the most important scientific findings in a while


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Howler Monkeys With Loudest, Deepest Growls Have the Smallest Testes, New Study Finds

 

The deeper the growl of a howler monkey, the smaller its testicles are, making it more attractive to females at the cost of a reproductive tradeoff.

 

"There's also a dramatic difference in the size of the monkeys' testes.

 

"The largest are 6.5 times bigger than the smallest."

 

Read more: http://www.universityherald.com/articles/25211/20151023/howler-monkeys-with-loudest-deepest-growls-have-the-smallest-testes-new-study-finds.htm#ixzz3pUn1GRQt

Edited by JTSP
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