When our dogs bark at someone they don't know, there are frequently many causes at play. Dogs typically bark at strangers for the most prevalent of the following reasons:
A dog's natural instinct is to guard its home and its people. Some dogs are territorial and will bark at anyone they deem to be an intruder.
Becoming territorial
Your dog is probably territorial if it only barks at strangers when they get too near to your house or to you when you take it for walks.
Our four-legged friends often bark when they encounter new people because they are so excited to meet them.
It's conceivable that your dog is merely overjoyed when they bark at strangers with their tail waving and their butt wriggling.
Because our dogs aren't used to having strangers around, they sometimes start barking at them. When meeting new people, an unsocialized dog may bark at them as a kind of greeting.
Insufficient Interaction With Others
Fear of the unknown, like a lack of socialization, may make our dogs defensive and vocal when they see new people.
The fear
If your dog has a high threshold for fear, it may react defensively when strangers come near you or your house.
In conclusion, dogs bark at strangers for a variety of reasons such as being territorial, excited, unsocialized or out of fear. Understanding the cause can help address this behavior.