Question: what the difference between alligator and crocodile skin?
Answer: The second difference is that crocodile skins have a small pore close to the edge of each of the scales, which is a remnant of a hair follicle. Alligators have no pores. As you can see in the picture below, Niloticus bags (left) typically have larger scales than Porosus bags (right), which are smaller and more defined.