Oral contact between canines, specifically licking around the muzzle and mouth area, is a common behavior observed in domestic dogs. This action frequently involves one dog actively licking the other’s face and mouth, and is often interpreted as a form of communication or social interaction. For instance, a younger dog might lick an older dog’s mouth as a sign of deference.
Understanding the underlying reasons for this behavior is valuable for dog owners. This action can provide insights into the pack dynamics and social hierarchy within a multi-dog household. Historically, this behavior may stem from puppyhood, where pups lick their mother’s mouth to stimulate regurgitation of food. This innate behavior persists in some form into adulthood, representing a complex interplay of communication and social bonding.