It's pretty uncommon for a puppy to have a malformed or undeveloped kidney. I have never seen it personally but I'm sure it happens from time to time, just as it does with human babies. It's definitely not a health issue common with Mini Aussies (or any breed that I know of).
What symptoms did you see that had you concerned?
Answered by 4seasonskennel - 9/12/2011 1:34:51 AM