We have a St. Bernard, who is not fully grown...still a puppy (11mos), and we have almost 5 week old kittens. I just read that someone let their kittens free-roam at 6 weeks old when they are home. I just wonder if that is way too soon for our little guy roaming around the house, because of the size of our dog. She tries to play with Katie, Ogo, and Mushy, from time to time...I just don't want the little guys getting trampled. How old do you think they have to be before they can hold their own against my saint?