Indian Walking Stick Insect (Crausius morosus) can also change color from green to brown to help them blend into their surroundings. If a breeze is blowing, the walking stick will sway from side to side in order to keep up their twig appearance. When disturbed by a predator, they may drop to the ground and stay still for hours in order to give the illusion of a twig falling to the ground. They are native to tropical forest in Southern India.