They have fingerprints and opposable thumbs

Similar to humans, gorillas have distinctive fingerprints (and toe prints), which can be used by researchers to distinguish between gorillas when they are researching them. They possess an opposable thumb, just like humans, which allows them to grab and grasp objects to a similar extent.

Gorillas can control objects with their hands and feet while still being able to stand erect since they, unlike humans, have an opposable big toe. Despite this, they choose to move around more on their hands. Scientists once believed that having opposable big toes would preclude bipedalism, but fossil evidence reveals that humans lost our opposable big toes later in evolution, after early humans began walking upright and demonstrating that it is possible to walk with opposable toes, as demonstrated by gorillas.