The domestic cat can be intensely curious. They are inherently and instinctively motivated to respond to quick movements and sounds which might correspond to the sounds of a prey animal. Domestic cats can locate the source of sound very accurately .  The intensely curious domestic cat stimulated by fast movements. Screenshot. They will pick up a quick moving object in their peripheral vision and investigate to find out if it is a prey animal. This cat is responding in this way to what sounds like a liquid being poured into a container. It doesn't matter what's happening off the screen.  What matters is how the cat is reacting which is with great intensity and curiosity. The pupils of the eyes are wide open. This is because it's inside the home and there is not a lot of light. Also they may be wide open partly because this cat wants to see as clearly as possible.   The domestic cat's instinctive reaction to fast moving objects can interfere with how people interact w...