I hope my wife is right about this: we are getting a new puppy soon while our current dog is still with us, but 12 years old. He has been a loyal and wonderful companion but has really slowed down in the last year or two, and now seems to be having more and more issues. It breaks my heart to see him want to romp and play and then see his rear legs give out from under him. He wants to go out for the long walks that he so loved to take, but now is worn out after about one-half mile, or less. My wife thinks it will be good for him to have a young puppy in the house, and that he will help socialize the puppy as well. I worry that an old dog will just be run ragged by a new puppy and will go downhill even faster than if just left alone. I will admit that since our little pug died two years ago, the old guy has not been the same and maybe having a little dog in the house would perk him up a bit.