Yes, cats and dogs can see computer and TV screens and recognise what’s moving on them. Lots of dog owners watch TV with their dogs! The only downside for the dogs is that they don’t have as good colour vision as humans so the picture wouldn’t be quite as pretty to them!
Whether cats and dogs understand that what they’re seeing isn’t actually in the room is another question entirely!
Cats and dogs can see movement perfectly like humans, so they can definitely see movements on a screen. That’s why they watch tv or start barking when they see another dog. They just don’t see black and white so don’t get to enjoy epic films as much as us 😛
But dogs and cats can hear higher sound like us and having a TV on or even a light bulb on is like us hearing a high pitched bell going on 24/7. So that’s why i sometimes turn the TV off when they are trying to sleep 😀