I have two year old female GSD, she is very protective of her pack. Last year, the wife's brother came to visit. The meeting did not go well, and never became well. We tried walking, which went well until we walked into the house. We tried treats, but did not get the desired results. At one point after a good long walk with the brother in-law, we thought we had a break through. Then the wife and brother went shopping and when they came back, the dog nipped the brother in-law.
Now the mother in-law is comming for a visit. Any suggestions.
