Bernard Castelein / Malagasy giant / Oustalet's chameleon (Furcifer oustaleti) near Tsaranoro massif, Andringitra NP, Madagascar

Pete Oxford / Petter's chameleon (Furcifer petteri) walking along branch, Joffre Ville, Northern Madagascar

Nick Garbutt / Petter's chameleon (Furcifer petteri) on branch, Ankarana Reserve, Northern Madagascar

Jouan & Rius / Petter's Chameleon (Furcifer petteri / Chamaeleo willsi petteri) walking along branch, Ankarana Special Reserve, Madagascar

Jouan & Rius / Petter's Chameleon (Furcifer petteri / Chamaeleo willsi petteri) on branch, Ankarana Special Reserve, Madagascar

Pete Oxford / Chameleon (Furcifer petteri) on foliage, Ankarana Reserve, N Madagascar

Pete Oxford / Petter's Chameleon (Furcifer petteri) portrait with open mouth, Montagne D'ambre National Park, Madagascar

Pete Oxford / Petter's Chameleon (Furcifer petteri) walking on thorny branch in protected area, Daraina, Madagascar

Pete Oxford / Petter's Chameleon (Furcifer petteri) camouflaged amid foliage in protected area, Daraina, Madagascar

Pete Oxford / Petter's Chameleon (Furcifer petteri) on thorny branch in protected area, Daraina, Madagascar

Nick Garbutt / Chameleon portrait (Furcifer petteri) Ankarana Reserve Madagascar

Christian Ziegler / Petter's Chameleon (Furcifer petteri), Amber Mountain National Park, Madagascar