 Normally, the spider turns on its back to molt and stays in that position for several hours, as it pushes fluids just beneath its old exoskeleton and wiggles its limbs to loosen off the old and reveal the new exoskeleton.Once this has been accomplished, the tarantula does not eat for several days to weeks, and not uncommonly for up to a month after a molt, as its fangs are still soft; the fangs are also part of the exoskeleton and are shed with the rest of the skin.The whole process can take several hours and sheaths the tarantula with a moist, new skin in place of an old, faded one.