Cats can play practical jokes.
When I was a teenager, we had three Siamese cats. Mine was the alpha cat, her daughter came next, and my brother's cat Bitty was clear at the bottom of the pecking order.
I was sitting in my mother's room talking to her when Alpha came in to get a drink of water out of the toilet. Front feet down on the bowl, hind feet up on the seat, so she couldn't see when Bitty zipped out from under Mom's bed, pushed Alpha into the toilet, and zipped back again.
If Alpha knew the culprit, she would have killed her! I've never seen such an angry cat. She levitated out of the toilet, flew through the bathroom, and splatted down the hallway taking 10-foot leaps. She wouldn't even let me near her with a towel, just in case I was the culprit.
And Bitty hid under the bed the rest of the day, snickering.