Dunn’s team analyzed the biological “budget” of these primates and found a direct negative correlation: males with large ...

When visiting Costa Rica, you're sure to many types of mischievous monkeys. Here is one traveler's monkey-seeking adventure.

There’s a serious case of stranger danger unfolding on an island off the coast of Panama. A gang of five juvenile capuchin monkeys living on Jicarón Island has started abducting baby howler monkeys, ...

Nightingales are among the most celebrated of all animal singers, no doubt earning their place through the complexity of ...

Monte the howler monkey may be the loudest Dad at the Birmingham Zoo. Things are really getting loud in his family. Monte is now the father of three at the Birmingham Zoo, following the June 6 birth ...

Humans have practiced some form of yodeling since at least the 13th century, when Marco Polo encountered Tibetan monks on his travels who used the vocal technique for long-distance communication. It’s ...

On an island in Panama, a fad that one researcher called "viscerally disturbing" has recently taken off among a group of young male monkeys. These adolescents and juveniles have started to kidnap the ...

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 ...

Observations of Coiba’s tool-using immature capuchin monkeys show them carrying abducted infant howler monkeys. What is the reason for this behavior? Vanessa Crooks Caught in the act! Capuchin monkeys ...