In those parts of the mountains which are so rocky and rough that few animals can approach them, and on the high barrens where the snow lies late in summer, the beautiful big-horn sheep live undisturbed. It is only when they come down to the streams for water, that the hunter can have a fair chance of shooting them. They are swift and handsome animals. Their heads are crowned with ribbed and curving horns larger than those the broad-horned Texas cattle carry. Their coats are not woolly, but are covered with glossy brown hair, shading off in the lower parts to a white as pure as the snow-drifts among which they live. There are no animals, excepting the Swiss chamois and other wild goats, that can run and jump among jagged rocks as they do; and it is useless for any man or beast to try to chase them on the mountain-tops. But a few weeks ago, before the boys went out to work with the cattle, two of them were searching for horses in a canon opening westward from the valley, and Gip was trotting along behind them, when a turn in the trail suddenly showed them a flock of wild sheep climbing a steep path up the rocky side of the canon. Both men took quick aim and fired, and the flock went bounding on toward their home among the crags, with one fine young buck lagging behind, his leg broken by a bullet. Yet no man may hope to overtake a wild sheep among the rocks, even though the sheep has but three legs to go on; so, after wounding their fine game, it seemed as if they must lose him. But just as they were making up their minds to the disappointment, Gip took in the trouble with one quick glance and ran to their aid. He has never been taught to hunt, but he is a very wise dog, and does very well without training. He went scrambling up over the rocks ten times faster than a man could go, and soon headed off the wounded sheep. Now Gip is small, and a wild sheep is very large, and tall like a deer; and it seemed impossible that so little a dog could stop it. But the sheep naturally lowered its head to bring its horns to bear on the dog; and Gip, seeing its head within reach, gave a snap at its nose and hung on for dear life, though he was almost lifted from the ground. Even a mountain sheep can not be very nimble with a broken leg, and a dog on the end of its nose; so the boys soon climbed up after him, and when near enough not to endanger the plucky little dog, they ended the sheep's life with another shot. And so, for many days, all the men at the cabin lived on mutton finer even than the famous mutton that is fattened on the English downs.