
I had Boxers when the problem with Aortic Stenosis was discovered there were lists of dogs who had been tested but I don't know if the KC accepts them so that could be why you can't find anything on KC health test results.
The British Boxer Club has a Health section on their website
http://www.boxerbreedcouncil.co.uk/health.htmlAs for HD no idea. I have been out of Boxers since 1997 and I remember then it wasn't considered a problem in the breed....
Hope that might be of some help