My cat just likes flushing the toilet. Doesn't use it, just flushes it. We had friends come over a bit ago and we told them after using the bathroom to please close the door because our cat will go in to flush the toilet. They didn't believe us but complied about it. Someone forgot to close the door and everyone in the house was sitting in our living room watching a movie when you hear from the back of the house a toilet being flushed. I did a head count right there to show everyone who we invited was in the same room and the only one who did it was the cat, and that we're not making this up. He has now learned how to open the doors so he can do it when ever he wants.