4 Reasons Why is your dog bark at night. While annoying to North American country, barking comes naturally to dogs. as a result of it is a natural instinct, it may be a challenge to urge them to prevent barking at nighttime. Why do dogs bark at night? typically it’s as a result of they see or hear AN animal within the yard, or as a result of they hear alternative dogs barking within the neighborhood. alternative reasons they bark embody loneliness, lack of oversight, or inadequate exercise and play. to urge them to prevent barking at nighttime, you wish to grant them a additional rewardable possibility.