No one really knows why some dogs become afraid of fireworks and thunderstorms and they don't seem to bother other dogs. It could be connected to a dog's sense of hearing or to socialization and general levels of anxiety. Sometimes an otherwise happy-go-lucky dog will become almost hysterical with fear when he hears the sound of thunder. If you have a dog with one of these phobias it can be both perplexing and frustrating.
    There is actually a difference between being afraid of fireworks and being afraid of thunderstorms, although the two things are similar. Both involve loud, booming sounds and some dogs are afraid of both. If your dog is afraid of fireworks then he is likely afraid of the very loud noises. He may hide or try to climb in your lap, even if he is a very large dog. He may drool, pant or shake. Trembling is common. Dogs will often try to go to a safe place to try to get away from the noise.
    If your dog is afraid of thunderstorms he could be set off by more than just the sound of the thunder. There is a theory that dogs who are afraid of thunderstorms are bothered by the buildup of electricity in the atmosphere. This is the same electricity that causes static electricity to build up in a dog's coat. Your dog can tell when a storm is approaching long before he hears a clap of thunder or a flash of lightning and he may start showing his fear. Signs of thunderstorm phobia are similar to fireworks phobia: your dog may try to hide or climb in your lap. He may pant, drool or start shaking. He may try to seek out a safe place. Some dogs will try to climb in a snug place, such as a bathtub. The smooth sides of a bathtub will help dispel some of the charged electricity that they are feeling in their fur and provide them with some comfort.
    Whether your dog is reacting to fireworks or to thunderstorms there are some things you can do to help him calm down.
    If your dog has a serious problem and you need something that works quickly you should consult with your veterinarian ahead of time. He may prescribe a mild sedative for your dog in case of emergency.
    For dogs with thunderstorm phobias there is also a garment that can be worn that has helped some dogs.
    It can also help to turn up the TV or music during fireworks and storms to try to drown out the outside noise. Do things to distract your dog. Try to play with him before he becomes aware of the noise outside. Do anything to keep his mind off the things he fears.