When Au was a kitten, he liked to watch water swirling down sinks, drains and toilet bowls. He hasn't done it for ages but last week he marched into the bathroom, propped his front paws up on the loo rim, and demanded I flush. When I did as he asked, he shouted MEOW-OW! with loud abandon and demanded I did it again.
The following day he elbowed me out of the way so he could watch water swirling into the mop bucket. As you can see, he's just fascinated.
Anyone else live with a cat who is into this type of entertainment?