Last Saturday afternoon, I decided to put my beloved Pepper, a Whippet-mix, to sleep, which was an extremely difficult decision to make. He was at least 12 years old. No one was ever sure on how old he was when I got him after the 2003-2004 Oregon snowstorm, the humane society estimated that he was 7 years old. His story was that he was abandoned until I took him into my life. I moved to two locations during those 5 years and we never left each other's side. He was one if not the best dog that I ever had. I got the results back on Pepper from my vet. His upper part (auricles) of his heart were still beating normally but they could not communicate with the lower portion (ventricles).So, electrical conduction in the heart was not working properly. Eventually, his heart was going to stop beating. Everything else looked normal for an aging dog.