Terminator Cat! This is a unusual trait in cats referred to as 'Malevolent Strutting' is only known to be exhibited by a few breeds including Burmese Cats, Siamese Cats, and European short-hairs.
Cats will do this strut consisting of puffing their chest, lowering their chin and tightening their jaw seemingly randomly.
This trait is responsible for the belief in the 1500's during the time of the Black Death, that cats could communicate or sense ghosts or other beings and resulted in cat owners believing that the large loss of life filled the area with lost souls.
The cats would strut around their homes - often towards nothing specific and it would serve to frighten the owner to the point where they would put the cat on the streets.
Around 1600 it was discovered that the cats were not actually sensing ghosts or demons, but instead they just enjoyed frightening their owners.