Shepherd is a type label rather than a single breed. In listings it most often points to a German Shepherd or a German Shepherd mix, though Australian, Belgian, Dutch and English Shepherds and crosses with Labs or Huskies all turn up. What they share is ancestry in herding and flock-guarding work, where dogs gathered, moved and protected livestock.
Most are medium to large, athletic and quick to learn, with a thick shedding coat and a strong wish to stay near their people. Some are reserved or protective with strangers. Because ancestry varies so much, size, energy and temperament differ from dog to dog, so judge each dog by how it behaves and what it needs rather than by the label. In Waukesha, that means planning for daily exercise, training and plenty of brushing.