From the eerie croak of a tropical frog to the haunting call of the howler monkey, the animal kingdom is filled with some ...

Watch a playful howler monkey insist on attention and affection in a funny encounter.

Fossils show that howler monkey ancestors, Stirtonia victoriae, were eating leaves 13 million years ago, altering body size ...

An extinct relative of the howler monkey may have been the first leaf-eating primate in South and Central America ...

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 ...

Key Facts 13.3-million–13.6 million-year-old fossils from an extinct relative of the howler monkey show signs of being the first leaf-eating ...

In the kitchen of UC Davis Professor Emerita Sarah Blaffer Hrdy, overlooking a long dining table, hangs a painting by artist Isabella Kirkland.

He went from dreaming of becoming a biologist to using photography to document wildlife. Learn about the disciplined traits ...

A baby monkey named Punch is struggling to find acceptance in his macaque enclosure in a Japanese zoo, and endeared social media users are fully on his side. Punch, who was abandoned by his mother ...

What’s it like to have millions of fans but struggle to make friends? For Punch, a 7-month-old macaque, fame and loneliness have collided, leaving the world watching as he clings to a stuffed ...

Punch the baby monkey has captured the hearts of many worldwide. So when video of him being dragged by another macaque at the Ichikawa City Zoo was shared online, outrage and heartbreak ensued. The ...