[GH85Carrera]

Some dogs are just natural dominate dogs. You for sure need to get that dog to understand he is the bottom of the pack. Very much a part of the pack, but the bottom. He will become very aggressive to any strangers or even guest if he feels it is his job to protect the family because he is alpha.

My MIL had a dachshund that was trying to be an alpha. We were keeping her for a week when the MIL went on a trip. That dog just looked at our very old very much submissive and smaller dachshund and though she could be a bully. I grabbed her, turned her on her back and just stared into her face and eyes and used a very stern voice and explained verbally and with body language that her behavior was not permitted at all. I had to do that twice. After that she was a little aggressive with most guest and strangers in my MILs house but when we came over I made sure she greeted me in the tile floor kitchen because she would pee submissively when she greet me. I was the only person that she did that with. She pretty much ignored our dog as off limits.

Don't think of it as mean like a human child would think. It is a dog's way of the pack. They need to know their place in the pack.