Dogs barking at the air is not what they see, but what they hear or smell. Dogs can smell and hear much wider than humans, so they will notice things that we cannot see. , parents can go to a distance to check whether there are strangers or small animals. Dogs will not bark for no reason.

Tips:

All dogs can bark. When raising dogs, parents should pay attention to training their dogs to bark to avoid their frequent barking. Neighbors around.