Brown howler monkeys are endemic to the Atlantic Forest in Brazil and Argentina and became one of the 25 most threatened primate species following a yellow fever outbreak in late 2016. In response, ...

If you liked this story, share it with other people. Following a deadly yellow fever outbreak in 2016, brown howler monkeys are slowly making a recovery through targeted vaccination and reintroduction ...

Howler monkeys are known for their booming calls that can be heard for miles, but the science behind their roar is even more intriguing. Studies show these vocalizations honestly signal body size and ...

The deaths of dozens of howler monkeys may be the latest sign of the danger extreme temperatures pose to wildlife around the world. By Manuela Andreoni Gilberto Pozo, a biologist, was monitoring a ...

In southern Mexico, the deep and raspy roars of howler monkeys reverberate through the lush jungles enveloping the city of Comalcalco. The sound — akin to the rumble of distant thunder or the grumble ...

Howler monkeys in Costa Rica are facing a growing threat from bot fly larvae infestations, and new research points to tourism and land use changes as key drivers. A study by the Awá Science and ...