Even under a powerful microscope, it is very hard to tell a koala's fingerprint apart from a human's. They are the only non-primates with this cool feature!
If a Koala ever committed a crime, the police might accidentally blame a human! These fuzzy Australian marsupials have fingerprints that are so similar to ours that even experts using microscopes have trouble telling them apart.
Most animals do not have fingerprints. In fact, only humans, our close relatives like chimpanzees and gorillas, and... koalas have them. What makes this extra strange is that koalas are not related to monkeys or humans at all. They are marsupials, meaning they are more closely related to kangaroos and wombats.
Scientists believe this is an example of convergent evolution. This is when two different animals develop the same feature because they live in similar ways or need to solve the same problem.
The loops, whorls, and arches on a koala's finger are so human-like that there have been jokes in the scientific community about koalas "contaminating" crime scenes. While no koala has actually been arrested yet, their hands remind us that nature often finds the same perfect solution for different species!
Koalas are the only animals outside of the primate family (monkeys, apes, humans) to have unique fingerprints. Their fingerprints evolved separately from ours but look almost exactly the same because they help with climbing and feeling textures.
