This is a Clouded Jack Cat. An experimental breed accepted by TICA in 2015 but rarely heard of. It is a breed which has not taken off perhaps because its appearance is not distinguishable enough from the other breeds with a similar appearance.
Note: Some older videos on this page were hosted on Vimeo. That account has now been retired, so a few video blocks may appear blank. Thanks for understanding — there’s still plenty of cat content to enjoy!