Hot Dogs and Hot Dog Dogs

The dog population in Berlin seems to parellel chicago's. Except- the breeds differ from the ones that are prevalant in the states.
All of them seem to be a variation of the 'hot dog' dog, and all the others seem to convey a wiser look- attributed to their greyish, scruffy, longer beard hair.
American dogs seem to have a more vibrant, interactive, nieve, exploritive attitude. The ones in berlin have buisniess to tend to it seems:

they have buses:
http://www.reuters.com/article/lifestyleMolt/idUSL144087920080901

and pay taxes:
http://query.nytimes.com/mem/archive-free/pdf?res=9902E5DA143AEF33A25750C2A9679D94689FD7CF