Hi, I saw your post about your dog having heart disease. depending on the problem, with the right meds he can live a normal life. My Doby was diagnosed with a heart problem several years ago. He is on meds for it and he seems to be doing quite well. The vets haven't said to limit his activity. Just do whatever your vet says. The point is it is not automaticly a death sentence. I guess when I was told my dog had a heart problem it didn't scare me so much because I also have heart disease and I know you can live quite well with it. You just have to take the meds and do what the doctor says.