Why do dogs always bark

This condition in dogs can be caused by nervousness and fear, alertness, and physical discomfort. If the dog is in a state of nervousness and fear, it will shake and bark all the time. It is recommended that the owner calms the dog in time. Dogs are more alert, when there is movement around, the dog will appear the old barking situation, usually after the movement disappears will return to normal. Dogs are not feeling well will make a grunting sound, it is recommended to consult a doctor in a timely manner.