High energy is what this ones all about. Wiemaraner. Super athletic and can run for days, but the snow factor is not good. To thin and not enough fur. For other than winter sports this ones a keeper for sure. Selective breeding is pure becuase you do not mix different breeds of dogs. When a dog is bred with others of the same breed for selected traits(ie; retrieving, workin birds, exceptional nose, calm nature, aggresive nature) that is the definition of A PURE BREED. Not sure why you would not call a dog that has been bred for 300 to 400 years with the same breed a pure bred