Dogs often bark at people who remind them of past negative experiences, as this behavior is rooted in their defensive instincts. If a dog has been mistreated or has had a traumatic encounter with a person, it may associate certain characteristics, like appearance or scent, with that negative experience. When someone resembling that person enters their environment,

the dog may bark out of fear or anxiety, signaling a protective response. To prevent dog bites and improve behavior, it is important to treat dogs with kindness and patience,