That’s the best way for them to go though right? My last dog almost made 15. She was fine and happy (eating well, walking for 30 mins every day on 3 legs) until one day she got really sick. Took her to the vet, it was clearly her time, they gave her enough pain killers for me to bring her home and they came to our house to give the injection. I wanted her last memory to be our bed, she hated the vet. All happened over 2 days. I think it’s harder when there’s a slow decline and you have to work out quality of life.