I really don't think that the Superdome was constructed to withstand the winds that they will receive for such a long period of time.  I really hope it doesn't turn into a huge morgue.  
 
There are pet-friendly shelters but you have to look long and hard for them.  Many hotels relax their no pet rules in evacuation situations - such as the Choice Inn that we're staying in.   Several people I saw after I arrived were relieved when they say Carter and Cooper.  They went to their vehicles and trucks to get their dogs/cats out of their pet taxis and brought them inside to join their families. 
Down the street from where we are are several hotels.  You can see many breeds of dogs being walked - schnauzers, white highlands, ****zus, mixes -- so far we're on the only Yorkies I've seen. 
I know that Michelle and Brian's (my two older children) stepmother cried when she had to decide to leave her aged greyhound at home while they attempt to evacuate. 
I'm glad I didn't have to do that!  Yorkies are portable -- they are great travelling companions.  Just wish they weren't alerted so easily to all the sounds in the hall.  
 
 
Lisa