My mom had dobies. One time all the grandkids were sleeping on the living room floor at my parents. There were 6 of them from 4 to 10. The dobie my mom had at that time, Heidi, slept between them and the front door. Nobody was going to get "her" babies. H and I had been out with friends and came in the front door, she stood up and I could see her. I called out to her and she laid back down but had she not known us, she wouldn't have let us near those kids. Heidi was my favorite, she was really a huge baby. Very protective of my mom and the grandkids, she always kept an eye on what was going on but she was very sweet and very playful.