My dog, Lucky, has VHD, Valvular Heart Disease. It is common among older dogs and is caused by the thickening of the heart valves. There… Some medical facts. Any information you might have about this condition or ways to fight it are welcome, just drop it as a comment. Lucky and I would really appreciate it! Music by Peter Toh, used with permission http://www.youtube.com/hiddentracktv.