This bizarre animal, which grows almost to a foot long, is one of a group of leaf-tailed geckos that live on Madagascar.
Taking their names from the flat, leaf-like tail that extends from between their hind legs, the disguise fools major predators such as owls, eagles, rats and snakes.
The Satanic gecko twists into a cork-screw shape to conceal itself against the shrivelled brown leaves.
Others of the leaf-tailed species will blend against tree bark or green moss.
Although threatened by deforestation, geckos disguise themselves so well that biologists believe there are more species out there, waiting to be discovered.