Two men wrestling from Eadweard Muybridge’s "Animal Locomotion" series of stopped-action motion studies completed in 1887. Muybridge’s captured motion with a series of trip-shutter, high-speed cameras.
His first motion capture series of a horse running started with a bet. Leland Stanford, a railroad magnate and governer of California hired Muybridge to prove that when a horse gallops, all four of its feet leave the ground simultaneously.
Muybridge was also a hot-tempered man who shot and killed his wife’s lover...however, he was acquitted thanks to his friendly relationship with the governer of California, none other than horse-gallop-betting Leland Stanford.
If you know film and/or photography, you probably know the name Muybridge, the man who effectively invented cinema by taking photos in rapid succession of a horse galloping in order to settle a bet. And then went on to film endless movement sequences, mostly walk cycles, of various animals and human subjects (to the enternal gratitude of animators everywhere).
Apparently this is what happened when he got to cats.