We travelled to Chattanooga over Christmas. Generally speaking, the US is not that dog-friendly.
However, Chattanooga is one city that is trying to buck this trend. We visited Bone Appétit, where the store clerk told up about a grassroots movement to make the city more dog-friendly.
Cesar Millan also listed Chattanooga as one of the top five places to summer vacation with your dog. Although, I must say that coming from Sweden - even in December it was quite good weather for being outside!