Anecdotally, I know that some cats will follow a mouse pointer on the screen and can determine both its movement and location (since some of them will directly

Anecdotally, I know that some cats will follow a mouse pointer on the screen and can determine both its movement and location (since some of them will directly attack it if you move it around, particularly if you try to mimic the rough movement behavior of bugs, which is what I assume they think they are attacking). And FWIW, I've observed this behavior on old 30hz CRTs as well as modern 240hz LCDs and various things in between.