I have wondered from the day we brought him home if he was purebred.. He was advertised as 100% Australian Shepherd on a classified page and when we met to buy him the man went on and on about how he paid big bucks for his dogs and this and that. He had puppy mange when we got him so we had talked him down to 50.00. The puppy mange has since cleared, but his coat isn't nearly as long as most Aussies I've ever seen. I've also read that working Aussies have shorter coats. Could this be from the puppy mange and his coat hasn't fully come in, is he a working stock Aussie, or is he simply just a mix breed? If anyone has an opinion id love to hear. The picture on my page is what he looks like now. He's 5 months old weighing 30 pounds & very long legged. I love him either way, it's just something I've always wondered about.