Rescue Remedy
try for pets frightened by thunder or fireworks
Rescue Remedy is a Bach Flower Remedy available in Whole Foods, The Village Green and most other holistic supplement vendors.
I used it years ago for my Australian Shepherd to reduce her fear of thunderstorms. She never came to love storms, but, neither did she try to dig her way under the couch or bed when the storms were approaching as she had previous to using the Rescue Remedy.
I put it in her mouth and on the inside flap of her ears before and during storms. Over time, she calmed dramatically as we desensitized her to the frequencies of the storms using this remedy.
Google it. There are many articles regarding this and other homeopathic remedies to help our furry family members deal with these environmental stresses.