A vulnerable emperor tamarin (Saginus imperator) at the Cheyenne Mountain Zoo.
A mandrill (Mandrillus sphinx) at the Rolling Hills Wildlife Adventure. (IUCN: Vulnerable)
A cotton-top tamarin (Saguinus oedipus) at the Rolling Hills Wildlife Adventure. (IUCN: Endangered)
Black and white colobus monkey (Colobus guereza) at the Sunset Zoo in Manhattan, KS.
A critically endangered black-and-white ruffed lemur (Varecia variegata).
A Sumatran orangutan male named Chewbacca at the Sedgwick County Zoo.
Blue monkeys from the Omaha Zoo.
Blue monkeys from the Omaha Zoo’s Lied Jungle.
Suluawesi crested macaque (Macaca genus) in captivity.
A blue monkey at the Omaha Zoo grooms another.
Black spider monkeys at the Omaha Zoo.
Critically endangered (IUCN) Celebes macaque (Macaca nigra).
A female white-faced saki (Pithecia pithecia) at the Houston Zoo.
A male white-faced saki (Pithecia pithecia) at the Houston Zoo.
A capuchin monkey (Cebus cay) in the Pantanal, Brazil.
A capuchin monkey (Cebus cay) jumps from tree to tree in the Pantanal, Brazil.
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