Why do dogs lick your face and ears?
Your Dog is Licking Ears Because Dogs Can Be Gross.
Sometimes, however, ear licking goes back to another innate dog behavior: being a little bit disgusting sometimes.
Other Dogs are attracted to the change in smell (and probably taste) of the discharge in an ear when there is an infection present.
Dogs also lick because they like the taste of an owner's salty skin and out of habit.
Mostly, with domestic Dogs, it's a sign of affection.
Licking releases pleasurable endorphins which gives Dogs a feeling of comfort and pleasure — like the feeling people get when they are biting their nails — it relieves stress.
Many believe it's instinctual behavior, harkening back to the days when your dog's wild ancestors would mask their scent to help them sneak up on their prey.
Wolves, for example, have been observed rolling in animal carcasses or the droppings of plant-eating animals, to cover up their own smell during the hunt.