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 ...

After a fallen tree cleared part of the rainforest on the Osa Peninsula ... With the likes of jaguars and howler monkeys in the vicinity, the central courtyard offers a calm space in the midst ...

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 ...

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 ...

A defiant threat by Elon Musk warning that federal employees will be given "a second chance" to respond to his email asking them to justify their jobs or risk termination is likely to spark ...

The primates play a critical role as seed dispersers and their declining population poses a serious threat to the delicate rainforest ecosystems they call home. Only 100,000 Howler monkeys remain ...

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 ...

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.

The guttural call of a howler monkey. The rhythmic clucking ... The dense canopy is the rainforest’s downtown, where most of the species live, sleep, and play. You’ll be doing the same at ...

howler monkeys, three toed sloths, frogs, snakes, peccaries, various species of caiman and pink river dolphins. The Amazon Rainforest is one of the most significant and unique ecosystems on the ...