I agree with Ladymom, from what I've read, puppy mills rarely (read never) test for genetic disorders or conditions that may not show up for years. That's one of the reasons so many people are pushing to require such testing.
Unfortunately, puppies are big business, and are thought of by most as a commodity, not living creatures.

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The fullness of our heart is expressed in our eyes, in our touch, in what we write, in what we say, in the way we walk, the way we receive, the way we need. -Mother Teresa (
RIP Gizmo 3/9/07-8/18/12)