he is licking you because you are salty and you taste good, and a good well trained dog would not automatically go into protection mood unless told to do so, your dog doing so is a sign of insecurity.
listen you guys can say all you want about your dogs they are yours and of coarse you love them like they were one of your children. Don’t jump down my throat for voicing my opinion about them, as far as I’m concerned unless they are one of the many Staffordshire terriers registered with the AKC they are dangerous.