I went to the ofa site and these were the statics as to how many yorkies have been tested
YORKSHIRE TERRIER
RegistryRankEvaluationsPercent AbnormalPercent NormalCARDIACN/A80.0100.0ELBOWN/A10.0100.0HIPSN/A521.998.1LEGG-CALVE-PERTHESN/A119.190.9PATELLA66713.486.6THYROIDN/A70.085.7 |