I've worked with some pet doxies, and there's a woman that comes to obedience classes that breeds "working" wire coated dachshunds. Working ones are great. She's got a UDX on one of them, a few CDX's and some CD's and she does earthdog trials with them. I imagine they're titled with earthdog I just don't know what those titles are! lol. They are mildly reactive with other dogs though, one of the bitches is borderline reactive/aggressive. I've never had a problem handling them or felt that they were uncomfortable with me. The pet doxies I've worked with... well I've got a scar on my right hand from from a 10 week old singleton dachshund puppy that was all out attacking it's own owner. With some firm handling he did come around, I blame the fact that the breeder didn't take the extra precautions and time with the puppy considering it was a singleton. Not to nitpick here, but I wouldn't guess that a reputable breeder would mix their treasured lines. I mean, do oops litters happen with breeders who specialize in multiple breeds, I guess sometimes but that's a big red flag for me. A lot of smaller dogs have issues with luxating patellas, kind of like hip dysplasia in larger breeds. It happens to the best of breeders, but they work hard to avoid it. I agree with pookie. Obviously your going to have a better chance with a good breeder who can show you generations of dogs that are sound in the body and mind, over a complete crap shoot with a BYB or rescue dog. I'm supportive of rescuing but I don't think someone should be flamed for searching out a reputable breeder for the best possible chance of getting a sound, healthy, stable dog. Just my .02 cents though!