Lovely lifeguard
In the bathroom, all of the cats we’ve seen so far have been relatively calm. They’ve mostly just observed their people and passed judgment from a distance. On the other hand, this fellow screams at his owner whenever she takes a bath.
Perhaps the cat believes he is a lifeguard and wants to rescue his owner from drowning. Maybe he’s attempting to make relaxing noises to aid her relax. In any case, it’s quite amusing how needless worried this cat is!