German Shepherd dog

 If one has to ask this question, it probably is not a great idea to consider doing it. That being said, it is done all the time by people who know what they are doing, and who produce some outstanding dogs, and it is done all the time by some who have no clue about what they are doing. I can think of an entire set of questions I would be asking myself before considering breeding any dog to any other dog, regardless of bloodlines.