Dogs bark when they are alert and if they perceive any threat or feel anyone intruding. Barking is a way to communicate many things. The alert barking is to alert the pack about the intruder. It can be managed without shouting or getting frustrated. Barking is ok. Barking is normal. But if you don’t give enough mental stimulant and don’t practice leadership (calm assertive way of being) then dogs will over bark and will take time to calm down. | Oh My Dog