best of luck with the pooch leaf. I'm sorry for you both. Dogs have a special place in my heart. They are truely the best friend a man can have.
Make him comfortable, and rejoice in the fact that you did so in his last days.
I found a poem about old dogs a few years back that I really like. It really tugs at the heart strings, but I think it might relate a dogs perspective pretty well.
A poem by Dana Duke:
Just an old broken down dog
is what I've come to be.
My senses are all growing dim,
My eyes can barely see.
But master, you're still in your prime,
while I am fading fast,
Please take me with you one more time
Before I breathe mt last.
You used to take me with you
To the woods when I was young,
To do your bidding faithfully
In my youth when I was strong.
My best's no longer good enough,
I'm useless and confused:
For surely you must care for me
as much as I for you.
I'll be waiting by the back door,
Take me with you when you go.
It's all I've ever wanted
and the only thing I know.
I'll struggle up and wag my tail,
Eager your will to do;
And gladly endure a painful walk
Just to be with with you.
Take me with you when you go.
One more time I long to be
with my master and my friend.
Take me with you once again.