Gu Mu will recognize the second owner. The ancient shepherd is a very loyal dog that usually only knows one owner in its life. However, if the Gumu is abandoned by the first owner, and the second owner adopts the Gumu, and the new owner takes good care of it and gives it enough companionship and care, the Gumu may recognize the second owner.

How Gu Mu recognizes his second master:

1. Clingy. When Gu Mu recognizes its second owner, it will become very clingy and will always follow the owner, licking the owner with its tongue and wagging its tail at the owner.

2. Share toys with the owner. The Gu Mu is a very possessive dog. When the Gu Mu starts to share its toys with a new owner, it means that the dog has recognized its second owner.

3. Protect the owner. Gu Mu's protective desire is very strong, and this protective desire is only directed at its owner. Therefore, when Gu Mu is willing to risk his own life to protect its new owner when danger arises, it means that Gu Mu has recognized its owner.