Variable color pattern and camouflage in four male velvet geckos (Amalosia lesueurii). Like many rock-dwelling reptiles, the velvet gecko hides between narrow crevices in rock layers. See my blog post on the endangered broad-headed snake (Hoplocephalus bungaroides) to read about how habitat degradation is leading to population declines of sandstone inhabitants.
All photographed after disturbance 
Geckos have adhesive toepads consisting of thousands of microscopic hairs called setae – each seta composed of even smaller bristles. The flexible setae and bristles allow greater surface area to come into contact with the substrate, and van der Waals forces also play a role in enhancing the toepads’ adhesive capabilities. This adaptation for clinging on to surfaces has actually evolved over ten times independently in geckos. Check out Geckskin, a synthetic adhesive modeled after gecko toepads!