Your Dog

Does it mean anything when your dog licks your hand or forehead?
And what does it mean when a dog is behind a door and put your hand again to her, smell, lick and goes? What does it mean when your dog that you have a strong link to love him lick the hand or forehead? The first example (the dog behind the door) you just met her.
The wild dogs, wolves and coyotes, often greet each other by licking her face. This really comes behavior in young adults lick faces "to encourage regurgitate food. Because dogs are so social, they exhibit this behavior to anyone they consider part of their package or family. When a dog licks is welcome. do not think you can interpret a lot of licking his hand. It's probably similar behavior.
The Stooges – I Wanna Be Your Dog