Bernard Castelein / Collared iguanid (Oplurus cuvieri) close up of foot, Kirindy Forest, Madagascar.

Bernard Castelein / Collared iguanid (Oplurus cuvieri), Kirindy Forest, Madagascar.

Bernard Castelein / Three-eyed lizard (Chalaradon madagascariensis) Reniala Nature Reserve, Ifaty, Madagascar

Konrad Wothe / Cuvier's Madagascar Swift (Oplurus cuvieri) male hanging on rock, Tsingy de Bemaraha National Park, Mahajanga, Madagascar

Konrad Wothe / Marked Madagascar Swift (Oplurus saxicola) male, Andohahela National Park, Madagascar

Vincent Grafhorst / Cuvier's Madagascar Swift (Oplurus cuvieri) lizard on top of another, Antananarivo Crocodile Farm, Antananarivo, Madagascar

Pete Oxford / Dumeril's Madagascar Swift (Oplurus quadrimaculatus) on sandstone rocks in Isalo National Park, Madagascar

Vincent Grafhorst / Cuvier's Madagascar Swift (Oplurus cuvieri) lizard pair on a tree trunk, Antananarivo Crocodile Farm, Antananarivo, Madagascar

Joel Sartore / Photo Ark / Dumeril's Madagascar swift (Oplurus quadrimaculatus) portrait, Plzen Zoo. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Dumeril's Madagascar swift (Oplurus quadrimaculatus) head portrait, Plzen Zoo. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Dumeril's Madagascar swift (Oplurus quadrimaculatus) portrait, Plzen Zoo. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Merrem's Madagascar swift (Oplurus cyclurus) head portrait, Plzen Zoo. Captive, occurs in Madagascar.