I'm so sorry to about your loss of Dag. In time, the pain will lessen and you'll be able to remember the good times with him with a smile on your face once again. Our dogs are our children, too.
Another friend of mine lost her dog recently and someone posted the following:
"My Forever Friend
I know that it must be different,
now that I am no longer here.
I realize how much I was loved
and how all of you did care.
I know it will be hard at first
when you look around for me.
Expecting to find me in my bed
or beside my favorite tree.
Someday you will begin to see,
although it'll take some time,
the happy times you shared with me,
the memories are yours and mine.
I'll remember you, my family
and how much you meant to me,
So please don't grieve and don't be sad, it was just my time to leave."