The dog may have barked all night because it saw other animals or insects, or it may be because there is movement outside. If it is someone else’s dog, it may miss its owner. If the dog likes to bark at night, the owner should stop it in time to avoid disturbing other people or neighbors. You can choose to accompany the dog, pet the dog, talk to the dog, or let the dog sleep next to the owner. The dog will be more relaxed.