Not doing anything special. Earthquake preparedness keeps us well stocked, as I've described in threads like
Do you have enough food in your house?.
This morning I ordered an extra case of dog food thanks to
@Teacher Terry's comment. Between that and his dry food, Ozzy-dog would be set for at least a couple of months.
We have 90 gallons of fresh water on hand plus a backyard swimming pool, a very deep canned & dry foods pantry, full freezers with food that will last longer than a couple of days because they're heavily stocked with fruits, veggies and starches. All told, I might have a pound of frozen meat (that I've been gradually cooking and feeding to Ozzy) and a couple of pounds of shrimp.
Our RV's fridge can run on propane. The tanks are full, so anything needing refrigeration could be shuffled into that fridge/freezer.
The above said, if all hell breaks loose, having enough food and water will likely be the least of my concerns.