sorry i just saw this, and needed to give you all my support and i totally symphatize i´ve been there and its awful, as said by many Nanook seems so energetic and healthy and most of all happy, so as long as we want to keep them forever it cant be and the time you two have spent is the most valuable thing. so now you have to think of him and not you (i also thought of me, i dont say you do too, please dont get me wrong) because when one of my dogs passed she was 14.5 and i didnt wanted her to go, but tehn i saw she was in pain, her legsa didnt work right she felt constantly and when she got up she shaked so bad she prefered to stay laid, i realized that was no fair life for her so i asked God, because he knew best "if shes suffering as much as i can see, because she is a tough dog, please take her with you so she can have peace and tha pain goes away" she went to the RB during her sleep... i cried my eyes out as i´m right now, but you gotta be tough and since Nookie seems much much better than my dog was, he´ll give you more time of love and companionship, so cherish every moment with him, as it could be days, weeks or years dogs deserve our dearest love ALWAYS and ge always get it back no matter how they feel. if you need anything dont hesitate and PM me, i´m here for you both............HUGS and Kisses