I've has 2 rottweiller mixes and they are the sweetest, most loyal dogs. The one I have now I got from the pound, she was about 2 yrs old and I had ds 1.5 and was pregnant with dd. Now, 3 yrs later, she has never been aggressive, she is soooo docile. The baby used to torture her and she would run away. She gets between the kids when they fight and howls... like the peter pan dog. Rotties are nothing to be afraid of, IMHO