Losing a pet is never an easy thing. I too have an elderly dog at home who is nearing the end of her run, she's going to be 18 in October if she makes it that long. I got all weepy eyed just looking at all those wonderful canine companions & hearing their owners stories of love & loss.
Hang in there & remember the good times you shared with your buddy. Maddy will be with my beloved Jake soon, who passed away suddenly last year. I still get sad over his loss over a year ago.
Pat - I remember Walter as being a great dog. Sorry to hear of his passing but I am glad to hear that Nicky is still around. Be well.