Enrique Lopez-Tapia / Common brown lemur (Eulemur fulvus) in tree. Andasibe-Mantadia National Park.

Roland Seitre / Rhesus macaque (Macaca mulatta) group sat on dome in urban setting, India.

Bernard Castelein / Black Lemur (Eulemur macaco) male, Nosy Komba, Madagascar

Paul Williams / Bonnet macaque (Macaca radiata) adults and baby in temple, Hampi, Karnataka, India, July.

Paul Williams / Bonnet macaque (Macaca radiata) male standing on road barrier, Vaparai, Tamil Nadu, India, July.

Paul Williams / Bonnet macaque (Macaca radiata) male grooming female, Vaparai, Tamil Nadu, India, July.

Barry Bland / Barbary macaques (Macaca sylvanus) with baby, Rock of Gibraltar.

Barry Bland / Barbary macaques (Macaca sylvanus) mother holding baby with another playing with the baby, Rock of Gibraltar.

Barry Bland / Barbary macaque (Macaca sylvanus) mother holding newborn baby macaques, Rock of Gibraltar.

Barry Bland / Barbary macaques (Macaca sylvanus) with baby, on the Rock of Gibraltar, July.

Barry Bland / Barbary macaques (Macaca sylvanus) baby held by adult, Rock of Gibraltar.

Barry Bland / Barbary macaques (Macaca sylvanus) holding baby macaques, Rock of Gibraltar.