Ur was born long ago. In fact so long ago that we can hardly relate anymore to him. He was what we call a prehistoric man, a mix between human and ape.
Ur had brown fur all over his body and he could not walk upright like we do now. His fur was long but thin and soft. He walked slightly bended. In this aspect we can fully relate to Ur, since in terms of evolution our bodies start bending towards our computer again.