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Originally Posted by Woogie Man  Deafness associated with the piebald gene was discussed in a parti thread a long time ago. It occurs most often with the extreme piebald effect or with white heads. There is no specific info on the parti Yorkshire, but the effect is well documented in other breeds. A pup may be born or become deaf in either one or both ears. A BAER test is used to determine deafness, especially in dogs with unilateral deafness. Either the piebald or double merle gene can cause this.
I suppose it should be mentioned in this thread since all things parti are being discussed. I don't think it's inherent in parti Yorkshires, but the risk is certainly there.
I don't have all my links from before, but here are a few that discuss the piebald and double merle gene in other breeds. health issues WHITES: IS IT WORTH THE RISKS Health Issues Boston Terrier Dogs AKC Shows Natural Rearing |
I agree the risk is there, that is why I want colored heads. I believe they should have a symmetrical colored head.