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 ...
Dunn’s team analyzed the biological “budget” of these primates and found a direct negative correlation: males with large ...
Brown howler monkeys (Alouatta guariba), endemic to the Atlantic Forest in Brazil and Argentina, became one of the 25 most threatened primate species following a yellow fever outbreak in late 2016. In ...
When visiting Costa Rica, you're sure to many types of mischievous monkeys. Here is one traveler's monkey-seeking adventure.