The Luzerner Laufhund was bred in medieval Switzerland for hunting large game. It was specifically bred small so its energy demands would be lower for surviving the cold Swiss mountains. A small size also makes the dog more adept in rugged mountain terrain. The Luzerner likes children, strangers, and other dogs, & has a low-maintenance coat, but it is not suited to urban living without extensive exercise.
The Brittany: A high energy medium sized dog with remarkable social skills - great with kids, cats, and all sized-dogs. Originally called Brittany Spaniels, 'Spaniel' has been dropped in recognition of their many Setter traits.