Mary the water in every bath, sink, toilet, in every house/building that I have ever owned, (although I don’t make a habit of holding my head in the toilet when flushing, but Hey, if that is your thing ------) has always, and does, swirl in a clockwise motion.
As to dogs, I have bred dogs for many years, mainly Boxers, and I have to say that although predominantly my dogs tend to turn three times clockwise before settling down to sleep they do at times turn the other way, at times even turning clockwise three times then immediately reversing for three turns anti clockwise before settling
I have many varieties of Southern, Indian, and Pacific Ocean Abalone shell here and they all have formed with the swirl clockwise