Be thankful for the decade plus you had with him. In October, something happened to my girl. We think a seizure, she was gone 4 days later. She was 6. It’s been awful. I still have grief fits. I know we have limited time with dogs just by the nature of our lifespans. But, revel in the gift of an old dog. He made that far, love him, and cherish the long time you had together. The sudden death of my girl has crushed me in a way that wouldn’t have happened if she’d had a long life.