Ok, So here is a loaded question!! I have a cat who was found to have a heart murmur at the last vet visit. We are taking him to a cardiologist next week to find out if it is serious or not. His sister died recently of congestive heart failure. Apparently both of them were born with bad hearts. The surviving cat doesn't seem to have any symptoms yet of heart disease like the first one did other then the murmur but my question is, my husband and I are in the process of possibly adopting a doggie from a rescue clinic. We are taking extra extra care to find a dog that will not be agressive with my cat-preferrably a dog who has lived with cats before and has not bothered them. I don't want a dog that will chase or nip at our cat and cause him to have a heart attack! For those of you who have both cats and dogs, do the cats seem stressed by the dogs at all? I know the homecoming of the dog may cause some stress and we are going to take A LOT of time introducing them, but after that do you think it would be ok for us to have a dog in the house? We do plan to keep them on seperate floors of the house while we are away. I've always wanted a dog but I love my cat and i'm heartbroken by this entire situation! What is everyone's opinion on this??