The Mesker Park Zoo and Botanic Garden in Evansville is welcoming a new baby black howler monkey. The zoo took to Facebook to ...

Howler monkeys have beards and long, thick hair which may be black, brown, or red. The red howler species is the most common, but it is often targeted by hunters eager for bushmeat. Other species ...

An example of sexual dimorphism is size and coat color of black howler monkeys. Males typically weigh around 32 pounds and have a black coat, whereas females typically weigh 16 pounds and have a ...

Established to protect the local population of black howler monkeys through voluntary community participation in land management, the Community Baboon Sanctuary encompasses over 12,980 acres of ...

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 ...

According to the fifth census of Mantled Howler Monkeys, Alouatta palliata, on Barro Colorado Island in Panama, monkey numbers have changed little since the late 1970s. Disclaimer: AAAS and ...

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.

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 ...