Oh you guys can keep me distracted with tech discussion, which is at least a mild help. But yes. It will be a rough next few days. I will try to remember the good, and forget the bad.
I know you from your posts. I know you gave another living creature a good life. It's all we can do - give comfort to another living thing, no matter what it is. Animals don't philosophise about death, they just live in the moment and if all those moments were made good, then you know you made another creature content and happy with it's lot.
If the world gave that to you, you'd never know sadness. Your grief will fade with time and you'll soon smile when you know how much that dog loved life, all because of you.