Dogs are instinctually drawn to licking right from birth when a mummy dog is licking the babies to feed and care for them. This habit translates into a submissive gesture of affection when dogs are older.
Dogs also do like the salty taste of our skin, which is why some dogs love giving kisses after a workout.
But mostly, if your dog is licking your face, they are just trying to say, “I love you.”
How sweet is that!