I hear you.
My wife and I have a dog together as well.
She keeps it but it's an agreement we have made together.

Our hearts ache, it is our human pain, I find that connecting our personal pain to the universal aspect of the pain helps me slightly.

We are in pain, our spouses are in pain, there is pain.

Me: 29, wife: 29
Been together 6 years.
Married June 13 (2years)
Separation: 22/6/15
W stopped wearing wedding ring 30/6/15