It was a great night in the cave when Ab brought home two fluffy gray bundles not much larger than kittens and tied them in a corner with thongs of sinew, sinew so tough and stringy that it could not easily be severed by the sharp teeth which were at once applied to it. The fluffy gray bundles were two young wolves, and were, for Ab, a great possession. They were not even brother and sister, these cubs, and had been gallantly captured by the two courageous rangers, Ab and Oak. For some time the boys had noted lurking shadows about a rugged height close by the river, some distance below the cave of Ab, and had resolved upon a closer investigation. A particularly ugly brute was the wolf of the cave man's time, but one which, when not in pack, was unlikely to assail two well-armed and sturdy youths in daylight; and the result of much cautious spying was that they found two dens, each with young in them, and at a time when the old wolves were away. In one den Ab seized upon two of the snarling cubs and Oak did the same in the other, and then the raiders fled with such speed as was in them, until they were at a safe distance from the place where things would not go well with them should the robbed parents return. Once in safe territory, each exchanged a cub for one seized by the other and then each went home in triumph. Ab was especially delighted. He was determined to feed his cubs with the utmost care and to keep them alive and growing. He was full of the fancy and delighted in it, but he had assumed a great responsibility. [Illustration: AB SEIZED UPON TWO OF THE SNARLING CUBS AND OAK DID THE SAME]