Ranger has been suffering from lowered kidney function for about a month and a half, spent the night in the hospital once to treat his dehydration. He hadn't eaten since last Saturday and was very weak. On Tuesday his blood labs showed his kidneys were barely functioning at all so I decided it was time. I held his head, stroked his ears and looked in his eyes. He was so weak it didn't take long for him to go.
I knew his time was near for a while and I also knew it would be rough for me. He was my best bud for fifteen years and that's a long time for a dog. He had a good life.

Thanks to everyone for your kind words, I tear up every time I come back to this thread.