Tourist with tame red howler monkey, Tambopata National Reserve, Puerto Maldonado Amazon Jungle area, Peru, South America

Spider monkey (Atelidae), Achutupu, San Blas Islands, Kuna Yala, Panama, Central America

Peruvian spider monkey (Ateles chamek), portrait juvenile, Serere Eco Reserve, near Rurrenabaque, Beni District, Bolivia, South America

Peruvian spider monkey (Ateles chamek), juvenile drinking, Serere Eco Reserve, near Rurrenabaque, Beni District, Bolivia, South America

Peruvian spider monkey (Ateles chamek), juvenile sitting on a branch, Serere Eco Reserve, near Rurrenabaque, Beni District, Bolivia, South America

Howler monkey (Alouatta macconnelli) in the branches of a cecropia tree, Camp Patawa, French Guiana

Howler monkey (Alouatta macconnelli) with its young on its back in the branches of a Cecropia tree, Regina, Camp Patawa, French Guiana

Mantled howler monkey (Alouatta palliata) hanging by tail in a cecropia tree at dusk , Panama

Mantled howler monkey (Alouatta palliata) in a cecropia tree at dusk , Panama

Mantled Howler Monkey (Alouatta palliata) male in a tree, Soberania National Park, Panama

Mantled howler (Alouatta palliata) adult male howling on his territory, Pacific coast, Costa Rica