Why Dog Barking At Night?

Dog bark at night for number of reasons. One of the reason is loneliness. Dog get lonely at night because they cannot see any people and that's the reason they barks.

Second reason is they bark and howl to let the companion dog know their position.

Third reason is if they see another dog they will bark especially if that dog is unknown.

Fourth reason is if they see a stranger then the dog will bark and even howl.