Thanks for your input! That's wonderful that your puppy is doing so much better now! We have not wormed our dogs lately, so I'm going to assume that they do have some sort of parasites, since they are inside/outside dogs. We have mice in our house too, and I've read that they are a huge carrier of roundworm, which I have passed one of those myself!
I will see what HumaWorm says about it, when he answers back...hoping I can do it and not have to wait till the puppies are sold! :(