We have a jack Russell/beagle mix, best dog I've ever had. Wish I could clone her a couple times! We had a biggun until about 3 years ago, had to put him down. He was a mix as well, black lab, Shepard, and Rott. Got his personality from the lab, smarts from Shepard, and only thing he got from the Rott was his color and his growl (which he didnt use too often but it'd put the fear of God in any stranger that heard it). Awesome dog, I miss him, he was really just a big baby, and great with our daughter who was only about 3 months old when we had to put him to sleep.