Oh God, I actually sobbed out loud at work reading that last sentence. I call my dog pupperdoo as well, amongst other things. You gave Yukon a better life and he in turn gave you an unrivaled ten years of joy, love and companionship. There will be others but none like Yukon, remember that. And remember on some level, he knows it. Your best friend always knows. Hold his paw on his final journey and always carry a piece of your love of him with you wherever you go.