When you cut life to the basics, Kathy (and on Ellesmere Island animals are permanently on the edge) its about food and reproduction - and food powers reproduction....
A Wolf's mouth and nose provide its very short and very long range sensory capabilities. The wind brings the scent of prey from further than a Wolf can hear it - and this is an animal that can hear your heartbeat change as it approaches.... By sniffing, licking, biting, a Wolf gets scent, health assessment, taste, texture, density, food value, strength of opposition. Their paws are not clever like our hands. The Wolf bites, holds, moves things with its mouth. It can crunch bones with it, and it can mouth and carry an egg without breaking it. Its mouth is a key part of the armoury.
I agree that their first thought was that Gordon might be food. By the end of filming I honestly think they viewed him as a part of the family that made a contribution - but who knows how deep that feeling went? Fairly deep: there were no attacks on him even when the pack was having trouble obtaining substantial amounts of food. A remarkable record altogether.
John