This animal lives in reedy swamps, and is generally found in herds, which often number from 250 to 300 individuals. They are very wary, and difficult to approach, while they are so swift of foot that only a very fast horse can escape from them when carrying a rider on its back. In charging they throw their heads back, with the horns upon the shoulders, and then suddenly bend down and strike upward when they come within reach. The buffalo does not usually attack unless it is wounded, however, though solitaries will often lie in concealment and rush out upon the hunter as he passes by. THE INDIAN BUFFALO There is another kind of buffalo found in India, which is a very different animal in every way. It is different in appearance, for it has its head drawn out into a kind of muzzle, while its horns are very long indeed, and taper gradually from base to tip, at the same time curving outward and upward and backward. And it is different in disposition, because it is easily tamed, and is employed in many parts of India as a beast of draught and burden. You might see buffaloes drawing a plow, for example, or dragging a cart, and for these and similar purposes they have been introduced into Egypt, and even into Southern Europe. The wild bulls, however, are apt to be very savage when they live alone. But a herd of buffaloes, strange to say, though they will gallop up close, and toss their heads, and behave in a most threatening manner, seem never to actually attack a man so long as he has the courage to stand perfectly still. THE MUSK-OX Though it is called an ox, and looks like an ox, this animal is in reality much more closely related to the sheep. It is of about the size of a rather large ram, but looks much bigger than it really is, owing to the great masses of long hair, which cover the whole of its body, and hang down so far that one can scarcely see its legs at all. It is even more hairy than the yak. The horns of the male animal are very curiously formed, for they are so broad and flat at the base that they form a kind of helmet, which covers almost the whole of the forehead. They then droop downward on either side of the face, but curve upward and outward at the tips. Those of the cow, however, are very much smaller. The musk-ox lives in the most northerly parts of North America. It is perfectly at home amid the snow and ice, and lives in the wildest and dreariest regions, in which the ground scarcely thaws during the whole of the year; so that the life of those who hunt it is a very hard one. But, as a rule, its only enemies are the arctic wolves, which drive it to bay on some rocky mountain slope, and tear it to the ground by the mere force of numbers. The name of this animal is due to the musky flavor of its flesh, which is said to be very tender and delicate. SHEEP