This was his one trouble in the running of the pack; but she had other troubles. On her other side ran a gaunt old wolf, grizzled and marked with the scars of many battles. He ran always on her right side. The fact that he had but one eye, and that the left eye, might account for this. He, also, was addicted to crowding her, to veering toward her till his scarred muzzle touched her body, or shoulder, or neck. As with the running mate on the left, she repelled these attentions with her teeth; but when both bestowed their attentions at the same time she was roughly jostled, being compelled, with quick snaps to either side, to drive both lovers away and at the same time to maintain her forward leap with the pack and see the way of her feet before her. At such times her running mates flashed their teeth and growled threateningly across at each other. They might have fought, but even wooing and its rivalry waited upon the more pressing hunger-need of the pack. After each repulse, when the old wolf sheered abruptly away from the sharp-toothed object of his desire, he shouldered against a young three-year-old that ran on his blind right side. This young wolf had attained his full size; and, considering the weak and famished condition of the pack, he possessed more than the average vigour and spirit. Nevertheless, he ran with his head even with the shoulder of his one-eyed elder. When he ventured to run abreast of the older wolf (which was seldom), a snarl and a snap sent him back even with the shoulder again. Sometimes, however, he dropped cautiously and slowly behind and edged in between the old leader and the she-wolf. This was doubly resented, even triply resented. When she snarled her displeasure, the old leader would whirl on the three-year-old. Sometimes she whirled with him. And sometimes the young leader on the left whirled, too. At such times, confronted by three sets of savage teeth, the young wolf stopped precipitately, throwing himself back on his haunches, with fore-legs stiff, mouth menacing, and mane bristling. This confusion in the front of the moving pack always caused confusion in the rear. The wolves behind collided with the young wolf and expressed their displeasure by administering sharp nips on his hind-legs and flanks. He was laying up trouble for himself, for lack of food and short tempers went together; but with the boundless faith of youth he persisted in repeating the manoeuvre every little while, though it never succeeded in gaining anything for him but discomfiture.