I am so sorry to hear of your loss.
Hopefully in time your pain of losing him will be eased and comforted knowing that you were a wonderful owner for him. If you could chose, wouldn't you like to spend your last hours doing something that made you happy. That's what you gave Donnegan.
RIP and run free
I'm welling up just looking at those pics (and then reading your PM made me even worse
)
At least he went happily and peacefully and you could be with him til the end. He led a lovely life and I'm sure he is up there enjoying the sunshine.