[broscillator]

The observable non-reaction was true, what was not true was the cause, which is the low frame rate.

This is the problem with this kind of thing so often, people observe something and an explanation that sounds completely logical gets spread around.

[1000100_1000101]

I remember a friend's cat following the mouse pointer on an Amiga with a CRT monitor. When moved off the bottom of the screen, the cat would go right up to the screen and try to peer down to see where it had gone.

Not sure about dogs, but cats definitely could see a plain 60Hz CRT display... atleast some of them anyway.

[broscillator]

Sure but a cat would probably have the same reaction if an arrow behaved like that irl, it's not the same as recognizing something as a living being due to how it moves.