Most vets know absolutely NOTHING about breeding (I said MOST). All they see is a dog they think if pretty, whatever....
Doxie's are showing up in shelters left and right, you can almost guarantee at least 2 pleas a week from a number of shelters trying to save these dogs. TCAS just recently had one that most rescues wouldn't touch - it was absolutely adorable, but it had an attitude from hell.... would bite in a heartbeat. I don't think a rescue ever took it, this poor dog spent 3 weeks in the shelter environment, the shelter kept hoping someone would take it, but we all have enough issue dogs.
The only way these dogs will make a comeback and get out of the shelter is for the BYB's and puppy mills to shut down and let the responsible breeders go back to breeding for the betterment of the breed. (If you don't rescue, don't breed.)