We had a dog when I was a kid. “Clammy” (short for “Calamity Jane”). Clammy was completely panicked by thunderstorms, which there were a lot of where we lived. There were no “dog tranquilizers” in those days… so she was locked into the bathroom. She tore holes in the plaster walls in her panic! After that, she was kept with one of her humans actually hugging her for the hour or two of each thunderstorm.