I want to be apart of this thread too!
After Roxy is through with her anitbs and her staph infection clears up, I am off to the Vet to have both Roxy and TJ tested. They never showed any signs, but my groomer has a girl from a later liter from Roxy's both Parents, TJ has the same father too. Anyway, I don't know what the outcome is now, but this little girl had blood work done before her spay and the results were not good, the Vet said the results showed that her liver is that of an old, old dog (she was about 10 months at the time).
So, just as a precaution, I am having them both tested.