Gelada Baboons
In order to photograph the world's most fascinating primates in the wild, photographers Fiona Rogers and Anup Shah have traveled the world. In Ethiopia's high plateaus, they photographed this pair of gelada baboons who have drawn close to each other for warmth.
Crab-Eating Macaque
This primate lives in Borneo in Malaysia. His yawn is a warning to aggressors.
Verreaux's Sifaka
This member of the lemur family reaches for a tree stem in Madagascar.
source: http://www.time.com/time/photogallery/0,29307,2044442,00.html