Why dogs shouldn't lick your face?
Humans and dogs each have a unique normal flora of bacterial species in their mouths to keep things in balance.
However, humans generally practice dental hygiene, whereas dogs do not, unless their owner helps out.
dogs have evolved to compensate for the lack of dental care, Reynolds says, but that alone isn't enough.
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.
Safe: Some Vegetables.
Your dog can have a healthy snack of carrot sticks, green beans, cucumber slices, or zucchini slices.
Even a plain baked potato is OK.
Don't let your dog eat any raw potatoes or any potato plants from your pantry or garden.