It’s people with cats who frequently say their pet can’t settle in for the night and keep them up with their weehour wanderings throughout the house. Those with dogs often just complain that their pet hogs the bed. But there are plenty of dogs who experience nocturnal disturbances, too. Unlike with cats, the reasons for their difficulty staying calm at night can be quite serious, requiring your intervention. Here are four possibilities to consider for a dog’s late-night anxiety.