Have you taken a much closer look at Koalas’ hands? You would see that they have fingerprints that are nearly identical, just like humans. In fact, those are so alike that even detailed investigation under a microscope can effortlessly differentiate when it involves loopy, spinning ridges on koalas’ fingers from your own. https://www.mcgill.ca/oss/article/did-you-know/koalas-have-fingerprints-just-humans