Giant stick insects
The longest insects on the planet are stick insects, which have evolved a bizarre shape to hide themselves from predators among branches, twigs and foliage. Stick insects are usually nocturnal, staying motionless hidden under plants during the day and then getting up and moving around at night.
The giant walking stick from Southeast Asia is the longest variety, growing to as long as about 2 feet in length. Some species can produce a pungent-smelling defensive spray and some will feign death or even shed a limb to escape the grasp of predators, reports National Geographic. But these bugs are mostly harmless and are often kept as pets.