Thanks everybody for the insight. Still can’t believe our sweet little dog that curls up with us, has it in him to bite somebody. The more I read, the more I believe that this is fear related founded or not. Our vet recommended a behaviorist, so we might go that route. We did already do some formal training, but that was just a Petsmart class. It was more for the benefit of our kids but he was in a unusual social environment and did so well....better than all the dogs In the class.
We will keep working on this.
Thanks!
J