Howler monkeys are relatively small primates known for their incredibly loud, low-frequency roars that sound as if they come from a much larger creature. This is useful in the animal kingdom because ...
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Monkeys With Smaller Testicles Scream Louder to Compensate
Dunn’s team analyzed the biological “budget” of these primates and found a direct negative correlation: males with large ...
Baby, I'm howlin' for you. Male howler monkeys make deep and boisterous calls to attract mates, but the deepest-pitched songs may come at cost: the size of their testicles. A new study in the journal ...
A black howler monkey vocal chorus is seen at the Biological Field Station Corrientes, Argentina in this handout image released to Reuters on October 21, 2015. REUTERS/Mariana Rano/Handout via Reuters ...
SALT LAKE CITY, Oct. 22, 2015 - Across the animal kingdom, males hoot and holler to attract females and ward off competing suitors. Now, a new study finds that male howler monkeys with deeper calls ...
Reader John Honeyman shared this amazing photo of a howler monkey spotted in Santa Teresa, a beautiful town on Costa Rica’s Nicoya Peninsula. Santa Teresa is known for its stunning beaches, but it’s ...
WASHINGTON, Oct 22 (Reuters) - The howler monkeys whose guttural calls reverberate through Central and South American rainforests possess a secret that the males of the species may prefer to be left ...
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