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Originally Posted by bchgirl  The inheritance of PDA is considered polygenic...which means BOTH of your dogs contributed the gene which resulted in the birth defect. |
With this being the case, I would not think that the breeder whom you bought him from can be held totally responsible since your girls evidently carry the gene also. The breeders of the females are equally responsible.
Perhaps you can get her to refund half of the money since he is not breedable.
It really sucks, but I would spay/neuter all parents involved and start over. You don't want to pass this gene on to others.