I love seeing dogs protect their owners. I had a friend bring his truck over for me to do a brake job, I had my dogs put up so he could come into my garage. My shepherd immediately started watching him as he walked over to pet her. I told him not to because she did not know him, only for him say dogs love me. He against my advice put his hand out for her to sniff it, I'm glad he had a fast reflex, or she would have had him. Scared the shit out of him. Big man said if she had bit him ho=e would have punched. I told him no he would not and if he did, I was going to whip his ass. He has not been back over..LOL