Mossy leaf-tailed geckos are nocturnal and arboreal. Their eyes are large, lidless, and have yellow sclera with elliptical pupils, suited for the gecko's nocturnal habits. The mossy leaf-tailed gecko ranges in size from 6 to 8 inches (15 to 20 cm) when measured from nose to base of the tail. They spend most of the daylight hours hanging vertically on tree trunks, head down, resting. As with all Uroplatus geckos, the tail is flattened and leaf-like. U. sikorae has coloration developed as camouflage, most being grayish brown to black or greenish brown with various markings meant to resemble tree bark; down to the lichens and moss found on the bark. U. sikorae has flaps of skin, running the length of its body, head and limbs, known as the dermal flap, which it can lay against the tree during the day, scattering shadows, and making its outline practically invisible. Additionally, the gecko can change its skin color to match its background similar to the chameleons of Madagascar. Listed as vulnerable on the IUCN redlist with habitat destruction and deforestation in Madagascar as the primary threat to its future as well as collection for the pet trade. The World Wide Fund for Nature (WWF) lists all of the Uroplatus species on their "Top ten most wanted species list" of animals threatened by illegal wildlife trade, because of it "being captured and sold at alarming rates for the international pet trade". It is a CITES Appendix 2 protected animal.
Primary and secondary forests of Madagascar
Not sure how, but I actually spotted this gecko in its daytime resting position flat against the tree!