I have a different issue. My dog is highly dog aggressive. I have a duty to keep her away from other dogs, and the owners of those dogs who would stick their hands into the middle of a dog fight and be injured. I'd have no choice but to find a way to take her along with me.
I lived in Atlanta during Katrina, and most of those dogs never found their owners again. My next door neighbor at the time worked with a group who went and rescued dogs after disasters, In the Southeastern US, you get a ton of them--one with every hurricane. Most of those dogs end up in rescue and don't find their owners, if they aren't killed in the emergency itself or in the aftermath by eating contaminated food and water, being electrocuted, etc. Just thinking about the stories he told is making me cry all over again.