Howler monkey ancestors began eating leaves 13 million years ago, changing course of primate history in South 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 ...
WRAL

Monkey see, monkey do - even red wolf pups! Watch them try to howl at Museum of Life and Science

The Museum of Life and Science's red wolf pups are getting big! And, at 18 months, they're learning from mom and dad. Museum staffers recently caught some video of them taking some howling lessons ...
insider.si.edu

Aspects of the behavior and ecology of the howling monkey in the late rainy season / Russell A. Mittermeier

https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!386215~!0#focus ...
Johns Hopkins Medicine

Howler Monkeys Began Eating Leaves 13 Million Years Ago, Changing Course of Primate History in South America

• 13 million years ago, a medium-sized monkey known for guarding its territory among the treetops with a fearsome “howl” ...