Discover the fascinating world of bipedal animals, from waddling penguins and hopping kangaroos to upright-standing flamingos and ostriches. This article explores how various creatures, including apes ...

All vertebrate species have a pelvis, but only humans use it for upright, two-legged walking. The evolution of the human pelvis, and our two-legged gait, dates back five million years, but the precise ...