Calumma cucullatum – Hooded Chameleon

Calumma cucullatum is one of Madagascar's most distinctive chameleons, described by John Edward Gray in 1831. Its name comes from the Latin cucullare, meaning "hood," a direct reference to the immense occipital flaps that extend behind the head. These flaps are the largest of any chameleon species, giving it a hooded profile that sets it apart from all others.

This species is endemic to the humid evergreen forests of northeastern Madagascar. Its range stretches from Masoala in the north down toward Marolambo, at elevations between 400 and 720 meters. Within this band of rainforest, the Hooded Chameleon moves slowly among branches and understory vegetation, its flaps breaking up the outline of its head and helping it blend into the forest shadows.

The occipital flaps are not ornamental curiosities; they are functional structures. They serve as camouflage by disrupting the animal's shape against foliage, and they may also play a role in social display. Their sheer size makes them the most prominent head feature of any chameleon, and the reason Gray chose the name cucullatum nearly two centuries ago.

Conservation status is a pressing concern. The Hooded Chameleon is listed as Vulnerable on the IUCN Red List. Its forest habitat is under constant pressure from slash‑and‑burn agriculture, logging, and fires. Although it is protected under CITES Appendix II, regulation of trade does not address the primary threat: habitat loss. The survival of Calumma cucullatum depends on safeguarding the northeastern rainforests, particularly Masoala National Park and the Marolambo region, which are biodiversity hotspots for reptiles, amphibians, and lemurs alike.