Two of our cats, who have since gone to kitty heaven, would jump on the toilet seat, straddle it, lower their head and drink the toilet water. We had a very long and slinky Siamese cat that could put his front paws on the toilet seat and reach his head in to drink the water. That one wouldn’t drink from his water bowl. We think he wanted the water to be cold.
One of the above would also drink water from a running faucet.
Cats are so weird. If I put lotion on my legs, one of our cats would methodically lick the lotion off if I would permit it. That’s a very weird feeling - like sandpaper rubbing over your leg.
I have had many cats over the years, but only one who had a certain very uncatlike habit. He was a stray who just showed up at the door and we named him Sidney. He was an indoor and outdoor cat.
One day when I was alone in the house with him and happened to be walking down the hall, I heard the distinct sound of the bathroom facilities being used. This really startled me and I looked in just in time to see the cat straddling the toilet. I can only think that whoever had him before us had taught him that trick in lieu of using a litter box, although he used that at times as well.
He never quite got the hang of flushing, but even so we were pretty impressed with him.