Wolf hierarchy is very prominent when they eat; older wolves growl and even slightly attack younglings to teach them to wait; until others have their part of meal. Basically; the higher you stand; the wider choice of meal you have. If one wolf finds something edible; it might chase off the others and try to enjoy the meal alone.
When I look at how young pups play I see them use their snouts actively in games; grabbing and carefully biting each other; often one of the wolves will try to get on top with his snout; front paws or even whole body. The other wolf might not like it and then the chase commences.
Seems like wolves do know their territory really well. The time they spend not hunting or resting they examine it; and I guess; they know every tree and every bush nearby the den site or even in their whole area. Always curious; they look at the changes.
Final curious thing I learned today is that wolves are really good about digging; they actually dig whole tunnels if needed; although the exact reason is not clear to me yet; just the fact that they can dig one.