Found on almost every island in Japan, the Japanese macaque has one of the ... damage a rhesus macaque can cause is right up there. Howler Monkeys Are Dangerous For The Diseases They Spread ...

They can use this tail as an extra arm to grip or even hang from branches—no Old World monkeys have such a tail. A gripping tail is particularly helpful to howler monkeys because they rarely ...

Out of the depths of despair, hope is born. The life of baby Howler monkey Estrellita hung in the balance after her mother was electrocuted and killed by uninsulated power cables. Desperately ...

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 coast ...

My adventure of a lifetime began in 2015 when I was asked to follow the tree-top lives of Costa Rica’s gravity-defying howler monkeys (Alouatta palliata palliata). Image by Justine Allan.