Barking and crying at night may be caused by the dog being hungry, thirsty, wanting to go out, or suffering from separation anxiety. First, you need to prepare dog food and water for the dog, and take the dog out for a walk before going to bed. , if the dog still barks at night, you can let the dog sleep in the house and at the same time soothe the dog's mood, you can also prepare toys for the dog to distract the dog's attention and eliminate anxiety.