http://www.djt-club.de/
Click on Der DJT to see some working pics.
They are basically a type of Lakie (Ynysfor) with a bit of Welsh in there from way back (1920/30's). There was an intersting article on them in EDRD about a year ago, translated from German, all about their origins. I've seen them worked over in Poland at the trials. They are very popular in central Europe (Czech Rep. Germany, Slovakia and Poland) along with the Dachsund (Teckel or Jamnik).