“Law” is just a hollow word during desperate times. Yes, I have been through such situations on more than a few occasions during my tenancy on this earth. It is tough and trying. It brings out the best in many people while bringing out the worst in others.
Non-profit organizations, and the Local, State, and Federal Governments, cannot do it all. Prepare beforehand. Have supplies. Have a plan. During any emergency, and during disaster recovery, there is a good chance you will be on your own. Learn how to survive beforehand. Include plans and provisions to save your pets.