I will just leave this here. Make sure you listen out for the dialogue at 1:07. As much as I like you EG. This time your wrong . These guys lived with this pack for 6 years which is pretty awesome.
Face licking is a sign of submission amongst wolves and dogs, this goes back to when they are pups. Puppies lick the face of returning adult and dominating members to encourage the regurgitation of food brought back to the den. This is carried though to adulthood. Our pet dogs do it too (if you let them) to show your their pack leader.
Talking of pet dogs, they too love in a hierarchy thanks to inherited behaviour from wolves. All pet dogs with recognise one of the human members of their family as the Alpha or should if your training them correctly.