No-one knows exactly when the wolf came in from the cold and cautiously approached the fire. No-one knows when he started scavenging for scraps around the settlements of men. When did man first start feeding him? When did they first hunt together? When did the wolf, trembling and snarling, first allow the hand of the human to rest on his head, to stroke him, to tug gently at his ears? When did he start to welcome these caresses?