Many leonberger dogs have protective instincts in the direction of strangers. The leonberger canines needs intensive exposure to friendly people so that the leonberger dog learns to recognize the standard behaviors of good guys. And then the leonberger dog can recognize the difference when someone acts abnormally. Without having careful socialization, leonberger dogs may be suspicious of everyone, which could lead to biting. Some Leonbergers go in the alternative way — without enough socialization, a leonberger dog can become fearful of strangers, which can lead to defensive biting.

Leonberger Dog