We brought a "short legged jack russell" puppy in April this year. We apparently saw the mom and dad dogs which were short legged jack Russell's. As our dog was so small you couldn't tell he wouldn't have been. He is now 5 months old and now very clearly not a short legged jack russell. However, we are getting comments that he looks like a short haired fox terrier/fox hound. He is jack russell size, and hasn't grown much in the past couple of weeks. But we are wondering if he is a pure jack russell or if he is indeed cross bred. Let me know what you guys think... Also, is there a possibility that two short legged jack Russell's can produce a longer legged jr?