British photographer Edweard Muybridge pioneered work on animal locomotion using multiple cameras to capture motion in still photographs. After success as a photographer of the American West, Muybridge was sponsored by the University of Pennsylvania in the 1880s, providing banks of cameras and staff to photograph people in his studio and animals at the Philadelphia Zoo. Between 1883 and 1886, Muybridge made more than 100,000 images, from which these sketches originated.