I have a rottweiler mix with lab and I am just learn how dangerous these dogs are. I had my puppy since 5 weeks old. I am learning if I start taking him outside every 2 hours putting him on a pattern he get use to it. I sit at night keep calling his name Trey he is finally respond to it when I give him a treat. But I learning from some of the stories try to gain a good relationship with my puppy.