Please make sure your pets are not outside-- there are times when an animal can be so terrified that they can break out of the most secure yard. Or they can injure themselves trying. Keep them away from balconies, and open windows. The best thing you can do is to keep them securely in your home, or in the bedroom, where you have a TV or radio on- LOUD enough to block out some of the noises. They may still try to hide, but they will be safer in a more confined area.
Keep identification on your dogs/pets all the time, but especially on this holiday.
An article discussing all this is on a web site: Click here: Helping Your Dog Cope with Loud Thunder and Fireworks