Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...

• 13 million years ago, a medium-sized monkey known for guarding its territory among the treetops with a fearsome “howl” started doing something new. This monkey, one of the oldest known ancestors of ...

A black howler monkey sits on a tree branch in the Amazon Rainforest, Brazil. The surrounding forest shows dense vegetation and tall trees. Wildlife like this monkey is common in the forests of the ...

From coral gardens in French Polynesia to rewilded forests in Romania, a new generation of conservation projects invites ...

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 ...

Zoos often group the two species because of their similar habitats and dispositions Erik Bowker/Denver Zoo Conservation Alliance A capybara and a howler monkey have struck up an adorable friendship ...

WASHINGTON — A baby howler monkey clung to the back of an older male monkey, its tiny fingers grasping fur. But they're not related and not even the same species. Scientists spotted surprising ...

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 ...