Ordinary people don't know about the ancient animosity and conflict that has existed between men and canines for millions of years. They have been the number one obstacle to our expansion and there are probably more human beings killed by jackals or something similar thereof than any other cause in history outside of other human beings.
We beat these creatures by domesticating turncoats as our alarm systems, protectors and aide-de-camps. Without dogs bred to protect us from dogs, it is likely we would have never been safe down out of the trees. We owe them much of our survival.
I believe that one of the surprises waiting for the survivors of the Third World War will be that once they have surmounted shelter, hunger and thirst, they will find themselves at the mercy of packs of wild dogs running into the thousands in the post-apocalyptic environment. Dogs really are man's second best friend. His best friend is Colt .45, a buddy you should never leave home without.