I was worried about the same thing, but got a new pup in January with no problems, I do have two others beyond the jealous one, so that may help, but all three older dogs who are a bit spoilt and don't like sharing me simply love the pup, they are very gentle with her, and in fact spoil her themselves. I would have thought it would be ok. Older dogs are generally very tollerant of pups, even where they wouldn't be of older dogs.