Trixie is terrified of storms. At the first sound of thunder, she'll crouch down low and then go slinking off to hide under the bed or in a corner. She'll even growl when she hears a storm is approaching. The other three don't seem bothered by storms at all. Sadie was sitting in the window tonight watching the lightning in the distance.
I once heard that the season in which a cat was born has something to do with whether or not they're afraid of storms. I doubt its true, but it sure would be interesting to know why some cats react to storms and others don't.