Andy Rouse / Verreaux Sifaka (Propithecus verreauxi) mother carrying baby. Madagascar

Andy Rouse / Verreaux Sifaka (Propithecus verreauxi) jumping across ground with baby on its back, Madagascar

Suzi Eszterhas / White-faced Capuchin (Cebus capucinus imitator) chewing on grass, with face covered in pollen from flower, Osa Peninsula, Costa Rica

Richard Du Toit / Thicktailed Bushbaby (Otolemur crassicaudatus) KwaZulu-Natal Province, South Africa, March

Alex Mustard / Eastern tarsier (Tarsius trasier) in a tree at dusk. Tangkoko National Park, Bitung, North Sulawesi, Indonesia.

Konrad Wothe / Grey Bamboo Lemur (Hapalemur griseus) on bamboo, Madagascar, Africa, captive

Konrad Wothe / Coquerel Sifaka (Propithecus coquereli) Ampijoroa Reserve, Madagascar

Konrad Wothe / Coquerel Sifaka (Propithecus coquereli) with baby, Ampijoroa Reserve, Madagascar

Konrad Wothe / Mandrill (Mandrillus sphinx) male in zoo, face portrait, West Africa

Konrad Wothe / Red-collared Brown Lemur (Eulemur collaris) female, Nahampoana Reserve, South Madagascar, Africa

Konrad Wothe / Red-collared Brown Lemur (Eulemur collaris) female, Nahampoana Reserve, South Madagascar, Africa

Konrad Wothe / White-footed Sportive Lemur (Lepilemur leucopus) in Alluaudia ascendens tree, Andohahela National Park, South Madagascar, Africa