The Koala has fingerprints that are so similar to the human fingerprint that it is almost impossible to tell them apart because of the pattern, shape and size of the ridges. Under the microscope, the ridges look exactly the same. The width of the ridge, the shape, general size and pattern is the same. The main difference is that the entire human palm and fingers are covered with ridges while the koala only has ridges on its fingertips and some parts of the palm.