The dog recognizes the owner's family. But in its eyes, there is only one real master. Under normal circumstances, dogs will be friendly to all family members or people they often come into contact with. It will remember the smells and sounds of friends it has made with its owner, and will treat its owner's friends as friends and its owner's family as family. But there is always only one owner.

The dog recognizes its owner:

1. It reacts when you call its name. Dogs are so smart that they can sense your emotions and know what you are talking about. If a dog treats you as its master, after hearing you calling it, it will come over to see what you are going to do.

2. As long as the master is in danger, no matter how docile he was before, he will bravely protect the master, even sacrificing his own life for the master.