Feet: our ancestors had hands at the end of their legs, yet some non-primate have feet that have similarities with ours. https://en.m.wikipedia.org/wiki/Compar

Feet: our ancestors had hands at the end of their legs, yet some non-primate have feet that have similarities with ours. https://en.m.wikipedia.org/wiki/Comparative_foot_morphology https://en.m.wikipedia.org/wiki/Comparative_foot_morphology > The paw of the dog, the hoof of the horse, the manus (forefoot) and pes (hindfoot) of the elephant, and the foot of the human all share some common features of structure, organization and function.