What is the birth defect? AAI? I am so sorry your baby is going through this, hope she'll be ok.
Perfect example as to why people need to stay away from anyone advertising as 'teacups', putting emphasis on the size & looks...not on health!
She has quite a rep here

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http://www.yorkietalk.com/forums/bre...e-yorkies.html http://www.yorkietalk.com/forums/bre...bloodline.html http://www.yorkietalk.com/forums/gre...yorkies-3.html