Why dogs barge some people but not at others

Dogs are always in warning mode when someone just arrives at the scene. However, they sometimes immediately start growling or barking in some people, but not others. This momentary temperament can indicate aggression, defensive attitude, or just a few forms of anxiety. But why did they have different reactions depending on the individual?

Global life takes deep dives into this question and wants to share some possible answers with you. Read until the end of the article to find ways to prevent this behavior.

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