Dog running. High-speed photographic sequence of the silhouette of a running dog (Canis familiaris). This sequence, by the British- American photographer Eadweard James Muybridge (1830-1904), is from an album of photographs taken in California, USA, from 1872-79. The action runs from left to right from the top left. Muybridge pioneered the use of high-speed photography, using novel techniques to study animal and human locomotion. He began his work on high-speed photography when he was commissioned to discover whether galloping horses sometimes have all of their feet off the ground. He proved they did.