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 ...

Not long ago, most of this area was an unbroken expanse of green dominated by top predators like jaguars and harpy eagles. In the middle of the food chain were animals like howler monkeys which ...

An ongoing study of the cause of death of howler monkeys on Barro Colorado has identified the howler monkey bot fly Cuterebra baeri as the single most important factor. Very young monkeys are the ...

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 ...

MEXICO CITY--It’s so hot in Mexico that howler monkeys are falling dead from the trees. At least 83 of the midsize primates, who are known for their roaring vocal calls, were found dead in the ...

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 ...