My grandparents did the Mars DNA test on their dog, and I'd like to get your guys' thoughts on the results. Fritz looks pretty much like a pure rottie to me, if a somewhat out of standard one. The DNA test says she is half rottie, 1/4 Swiss mountain dog and 1/4 Finnish spitz. I could kind of see the swissie although they aren't the most common breed around here. But I don't buy the Finnish spitz at all. My guess is that breed shares some similar genetic markers with something else - either a different breed that mars doesn't test for or something in the heritage of rotties. I don't know what that might be though - any guesses? I'll post pics in a minute.