 Nervous pets drink more water. Make sure you give them plenty of water. Keep more available than usual. Bring outside pets inside so they can't bolt. Keep your cats securely inside. If your dog needs a potty break, normally people will let him out in the backyard. It's fancy. You can go, no, take him out on a leash and collar because if a firework goes off, it could make him freak out. Sure, as people come and go and the fireworks begin, but your dog or cat doesn't sneak out of the house looking for a safe haven.