We were at the Emergency Vets (they're open 24 hours every day, 15 minutes away, we are lucky) to see the cardiologist today- we were VERY impressed! We were there for an hour, she drew a diagram to explain all about the heart, and Sandstorm's slight murmur and a little leaking going on. She said how it can progress but right now everything looks okay and she doesn't think he needs medication. She was pretty positive about the condition and mentioned a medication (of course I forget the name of it, starts with a p?) down the line if and when he needs it. Phew!! My husband wasn't worried but I was! The cardiologist also wants us to switch his food to Royal Canin, do any of you use this? We will do that as soon as Sandstorm finishes his Blue Buffalo. I hope he does as well on the Royal Canin, what do any of you use, I know there are lots of varieties. She also is NOT a fan of grain free diets at all, and thinks it may be related to dogs and heart problems. I feel much better about Sandstorm and $600.00 later can say it was worth it. We need to follow up in a year.