I don't think mine care. A particularly loud crack might make the ears go back, but I can't recall seeing anyone hide.

J and I both love storms...maybe the cats are picking up on the hoomans anxieties??

Now, the vacuum cleaner, coffee grinder, plastic bags...those things scare the cats. I remember Allie and Dakky the first time I put on the ceiling fans...like little snakes on the ground, they were so scared!