I'm so sorry to hear about your pup. I'm glad to know that you are aware of the rainbow bridge. A year before I started riding, my 14.5 year old male cat Smokey had to be put down. He'd gotten sick but then rallied for several months. He got to the point I he'd stopped eating even out of my hand and had taken to sleeping in the bathtub. With tears in my eyes one afternoon I went in and asked him if it was time? My husband and I walked a mile to the nearest vet and stayed with him till the end. I have 2 female fur babies now, but even now writing this, my throat tightens and my heart aches.