Hitherto Lone Wolf had left all cattle severely alone, having got it somehow into his head that they were more peculiarly under man's protection than the sheep. Now, however, he saw his duty, and duty is often a very well-developed concept in the brain of dog and wolf. His ears flattened, his eyes narrowed to flaming green slits, his lips wrinkled back till his long white fangs were clean bared, and without a sound he hurled himself upon the red bull's flank. Looking back over his shoulder, Timmins saw it all. It was as if all his life Lone Wolf had been killing bulls, so unerring was that terrible chopping snap at the great beast's throat. Far forward, just behind the bull's jaws, the slashing fangs caught. And Timmins was astounded to see the bull, checked in mid-rush, plunge staggering forward upon his knees. From this position he abruptly rolled over upon his side, thrown by his own impetus combined with a dexterous twist of his opponent's body. Then Lone Wolf bounded backward, and stood expectant, ready to repeat the attack if necessary. But it was not necessary. Slowly the great red bull arose to his feet, and stared about him stupidly, the blood gushing from his throat. Then he swayed and collapsed. And Lone Wolf, wagging his tail like a dog, went back to Timmins' side for congratulations. The woodsman gazed ruefully at his slain foe. Then he patted his defender's head, recovered the chain with a secure grip, and said slowly:-- "I reckon, partner, ye did yer dooty as ye seen it, an' mebbe I'm beholden to ye fer a hul' skin, fer that there crittur was sartinly amazin' ugly an' spry on his pins. But ye're goin' to be a responsibility some. Ye ain't no suckin' lamb to hev aroun' the house, I'm thinkin'." To these remarks, which he judged from their tone to be approving, Lone Wolf wagged assent, and the homeward journey was continued. Timmins went with his head down, buried in thought. All at once, coming to a convenient log, he seated himself, and made Lone Wolf lie down at his feet. Then he took out the remaining sandwich,--which he himself, still shaken from his fall, had no desire to eat,--and contemplatively, in small fragments, he fed it to the wolf's great blood-stained jaws. At last he spoke, with the finality of one whose mind is quite made up.