Why do dogs love to lick people so much? Is this an expression of love?

Friends who raise dogs should know that dogs love to lick people with their tongues. Sometimes they come in front of you and lick their saliva all over the face. I really hate them! But if you think about dogs, is it really because you like you?
The following reasons may cause the dog to like to lick people. The shoveling officer must analyze the specific situation to see which reasons are common.

1. This is how dogs express their feelings.
   Dogs lick you because they love you! Animals often lick and groom each other. When they transfer this habit to humans and start licking, it is actually an emotional expression.
2. Attract the owner's attention
   Another example is that a dog made such a behavior while gaining the owner's attention. When the dog feels lonely or bored, it will find that you will not be angry after being licked, but will continue to play with it friendly. It will want to lick you to win your attention, and you will have a good time.
3. The animality of dogs
   Everyone knows that the ancestors of dogs are wolves. When the she-wolf feeds the little wolves for many months, she will chew the food and feed the little wolves with her mouth, that is, feed back. And the little wolf is more accustomed to licking at this stage.
4. Anxiety
   Don't think of a hairy child as an animal, it will also produce anxiety like humans. Once you feel this emotion, you will unconsciously perform licking behavior. Anything that can be touched around the dog may become its licking object.
5. Can dogs lick people?
   Under normal circumstances, if the dog is healthy, deworming and vaccinating regularly, and there is no infection, and there is no dental caries, then it is not a problem to be licked by the dog~