Bipedalism Bipedalism Bipedalism is a form of terrestrial locomotion where an organism moves by means of its two rear limbs or legs. An animal or machine that usually moves in a bipedal manner is known as a biped , meaning "two feet" (from the Latin "bis" for "double" and "pes" for "foot"). Types of bipedal movement include walking, running, or hopping. Few modern species are habitual bipeds whose normal method of locomotion is two-legged. Within mammals, habitual bipedalism has evolved multiple times, with the macropods, kangaroo rats and mice, springhare, hopping mice, pangolins and hominin apes (australopithecines and humans) as well
Lady with an Ermine but a white ferret, a colour favoured in the Middle Ages because of the ease of seeing the white animal in thick undergrowth. As in many of Leonardo's paintings, the composition comprises a pyramidic spiral and the sitter is caught in the motion of turning to her left, reflecting Leonardo's lifelong preoccupation with the dynamics of movement. The three-quarter profile portrait was one of his many innovations. Il Moro's court poet, Bernardo Bellincioni, was the first to propose that Cecilia was poised as if listening to an unseen speaker. This work in particular shows Leonardo's expertise in painting the human