It is realistic, sort of. Take a look at this second video, which shows Yume Neko with a real cat.
(Video shows Yume Neko compares with a real cat)
However, I'm not really sure that this is quite the sort of actual animal substitute that Philip K. Dick had in mind for his non-organic pets in Do Androids Dream of Electric Sheep?
...he had picked up the first malfunctioning animal for the day. An electric cat: it lay in the plastic dust-proof carrying cage in the rear of the truck and panted erratically. You'd almost think it was real, Isadore observed as he headed back to the Van Ness Pet Hospital - that carefully misnamed little enterprise which barely existed in the tough, competitive field of false-animal repair...
The electric mechanism, within its compellingly authentic-style gray pelt, gurgled and blew bubbles, its vidlenses glassy, its metal jaws locked together.
Scroll down for more stories in the same category. (Story submitted 9/3/2007)
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Illustrating Classic Heinlein With AI
'Stasis, cold sleep, hibernation, hypothermia, reduced metabolism, call it what you will - the logistics-medicine research teams had found a way to stack people like cordwood and use them when needed.'
Deflector Plasma Screen For Drones ala Star Wars
'If the enemy persists in attacking or even intensifies their power, the density of the plasma in space will suddenly increase, causing it to reflect most of the incoming energy like a mirror.'