This breed has been called the Monkey Terrier (due to its face) and the Moustached Little Devil (due to personality). They were probably bred for the home, to work as companions to ladies who needed mice eliminated.
These dogs tend to go everywhere, often climbing on things to get a better vantage point. They are playful and want to be at the center of things, but can bark quite a bit. They tend to do well with families and smaller animals.