My brother just put his Lab down for biting his kid for no reason. To say you can train a dog not to do this is wrong lets a remember dogs are animals. My brother had so many hours of training into this dog he is just sick when I say hours I think of thousands of hours not to think of the money. He had to do it he said he could live if something happened to a child his or someone elses.
I have two golden retreivers and it has changed how I think of them. I will still let them be around my kids but I will keep a closer eye on them. They have never showed any aggression and I don;t think they will but why give them a chance. Just my two cents.