Your Pomeranian may bark at night for several reasons. These include loneliness, fear, or restlessness. Although these and other reasons can trigger the barking, below are ways you can stop it: If your dog sleeps outside alone, allow it to sleep inside. The outdoors may be lonely and scary owing to noises and movements. Try using a white noise machine next to its crib if the barking results from other dogs or external sounds. Exercise your Pomeranian before bedtime. The barking may be due to inactivity during the day. Exercises help make them tired, so they can sleep easily and throughout the night.