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Cocker Spaniel



 Rank Among Breeds  Number of Dogs Tested  Percent of Dogs With Disease
 #13  17083  15.7%

The Cocker Spaniel ranks number 13 among all breeds for autoimmune thyroiditis prevalence. There is a high risk for obtaining a dog that will develop thyroid disease, so you should make sure you or your breeder is testing their dogs prior to breeding.

For information about this breed, from the American Kennel Club, visit

You can download the full report (on all breeds) by the Michigan State University Diagnostic Center for Population and Animal Health. Here