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 ...

Add Yahoo as a preferred source to see more of our stories on Google. This photo provided by researchers shows a baby howler monkey clinging onto a young adult male capuchin monkey on Jicarón Island, ...

Add Yahoo as a preferred source to see more of our stories on Google. Howler infant number 5 on the back of a juvenile capuchin carrier, who is using stone tools at an anvil site in a stream bed.

The red howler monkey in Assassin's Creed Black Flag Resynced is key to better hunting, sneaking, and fighting. Not that the monkeys will teach you anything, but you can use their pelts to craft the ...

On a remote, human-free island off the coast of Panama, something strange is going on: capuchin monkeys are kidnapping baby howler monkeys. And they’re not eating them, hurting them, or raising them.

Thirteen 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 ...

MEXICO CITY — It’s so hot in Mexico that howler monkeys are falling dead from the trees. At least 138 of the midsize primates, who are known for their roaring vocal calls, were found dead in the Gulf ...

BREVARD COUNTY, Fla. — Brevard Zoo’s black howler monkey troop gained a new tiny member last month. Zoo officials said 14-year-old Baya gave birth overnight on April 30 and the newborn was discovered ...

The daily movements of brown howler monkeys (Alouatta guariba) in the forest are determined by an interplay of environmental, behavioral and social factors. This is one of the conclusions of a study ...

For howler monkeys, it appears the louder the calls, the smaller the — ahem — balls. A research team looking into the monkeys’ incredibly loud and low vocalizations, and the physical structures that ...

Dating is tough. We all know that. To attract the right mate, or any mate at all, you have to stand out from the crowd. Maybe your best quality is your sense of humor, or your twinkling eyes, or your ...

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 ...