Hard to say, but I think the answer is mixed breed dogs A dog cannot legally be called a Purebred, unless it has Registration paper. There are many dogs that "look" like purebreds but do not have registration papers - so are legally "mutts" or Mixed breed dogs. Since there is really no way of knowing how many "mixed breed dogs" are out there (since they are not registered there are no qualified amounts) we have to look at the dogs that come into the shelters as strays, and dogs we see in everyday life - many are unregistered dogs.
I would say there are more mixed breed dogs in the USA.
According to akc. Com, they think that USA has more mixed breed than purebreed because backyard breeders are sprouting like mushrooms anywhere. Sad that with all the mercy killing of dogs in shelters, there are people who still breed.
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.