On Tuesday, Feb 3, 2009, my father passed unexpectedly and he loved animals, dogs especially. He'll take care of Duncan for you until you're reunited some day in the future. I know that maybe sounds corny, but he'd love the little fella and I do believe our animals go to heaven and wait there for us. I've had lots to pass that were so dear and I hope to see them again one day.
To have to part with anything you love hurts so much. To know that it suffered is worse. (My Dad suffered alot before he went due to an untreated heart attack the Drs. claimed was a gallbladder attack and even operated on him. So I know firsthand.)
I'm sorry this happened to you. And he was a very brave little guy indeed. You can be very proud.
Take care of yourself and my best wishes to you.