Bob, I think you are the most amazing dog ever...just like your wonderful owners who picked you out & loved you all the way to becoming a grand pet. I'm going to tell all my fellow dog rescuers in australia all about you. So you'll be famous at the other end of the world, too.
Has anybody told you that your face looks remarkably like an Irish Wolfhound's?
Wolfies were very special companion dogs to the kings of Ireland in days of old. That fits you, too, a noble pet for big-hearted people.