howler monkeys

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The Call of the Wild Comes at a Distinct Cost.
via Wikipedia

[DIGEST: AAAS, New York Times, Motherboard]

New research suggests that, as with humans, some female monkeys find deep male voices more attractive than their higher-pitched brethren. In a cruel kick in the pants, this research also suggests that – at least with howler monkeys – the deeper the voice, the smaller the testicles.

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