Check out the article on it at the Great Dane Lady's site.
If your dog eats some that is contaminated with worms, there's always a chance he'll pick up worms. There are probably some diseases that can be transmitted that way as well.
Thanks, I will check that out. I'm just asking because yesterday morning I ate some of Shep's poo, and I wanted to know if I should go to the hospital or not, because it tasted like crap and I don't feel very good today.