Subadult male Flap ‐necked Chameleon, Chamaeleo dilepsis, day‐resting in a small bush in Telperion Nature Reserve, South Africa. This species' common name derives from the large and movable flaps that protrude from either side of the upper surface of the neck. The sex can be determined based on the presence of the hemipenal bulges (not visible on the picture) and that of a nipple‐like spur on the hind legs. Adult males also have taller casques and larger flaps than females. Photograph reproduced by permission of Emmanuel Do Linh San.