Sooo.... you want to adopt a dog... fall in love with that dog... and be crushed when they die a few years later? Greyhounds only live around 10-12 years. Hey better you than me. Iâ€™m selfish though. I would absolutely love it if all the elderly dogs could be adopted and loved in their last few years. I.. I just canâ€™t do it. I have to get puppies, and even 10-15 years wasnâ€™t enough, and leaves me wanting more. If you are a strong enough person for that, then I adore you for it. Iâ€™m just not, you know? Iâ€™m selfish, I want every second of their lives with me.