Sorry for your loss. My dog just turned 12 this year. Every day I come home, wake up in the morning to let him outside, I'm waiting for the possibility that he may not wake up....take good care of the young lab, he's gonna need some extra attention with his brother gone.
Went down all most the same way with my GSD years back. He developed hips displacer (sp?) . 11 yr old buddy. Sorry about your bud, man.
Very sorry for your loss. It's never easy. Remember all the great times you shared to help get you through. Good Luck. >>>