How will a heart murmur affect my dog? He is 8 year old chihuahua with grade 4 murmur (caught sign of it in his vet visit a year ago).?

If it is, then please rush your dog to an emergency vet. If not, then it will probably be okay.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.