The burrow of a fox is sometimes an old rabbit-hole enlarged to a suitable size. But generally the animal scrapes out a burrow for himself, frequently choosing the roots of a large tree as a situation, or a very rocky piece of ground from which it will be very difficult to dig him out. In this burrow four or five little ones are brought up. They are odd-looking creatures, with very snub noses, and if you did not know what they were you would never take them for young foxes. THE ARCTIC FOX This animal, more interesting still, perhaps, lives in the ice-bound regions of the far north. There are often several of these to be seen in a zoo, and the first thing that one notices on seeing them is that no two of them are alike. One, perhaps, is reddish brown above and yellowish white beneath. Another is gray all over. A third, very likely, is mottled; while a fourth may be of that curious bluish color which we see in Russian cats. In fact, in the snowy polar regions a great many of these foxes turn perfectly white in winter. This enables them to creep over the snow without being seen by their victims. Then, when warmer weather comes, and the snow begins to melt, their fur passes back again to its original color. During the spring and summer the arctic fox feeds on sea-birds and their eggs, and it is said to attract the birds to the place where it is lying in wait by imitating their peculiar cries. But we do not think that that is true. What it feeds upon during the rest of the year is rather doubtful. It cannot catch birds, for they have all flown away farther south. It cannot catch fishes, for the water is covered in by ice several feet in thickness. Most likely it catches numbers of those odd little animals known as lemmings just as winter begins, and stores them away in a kind of larder, where the cold prevents their bodies from decaying. The arctic fox is a good deal smaller than the common fox, and has ears so short and rounded that they look just as if they had been cropped. In order to allow it to travel over the slippery ice, the arctic fox has the soles of its feet covered with long stiff hairs, which give it a perfectly firm foothold on the frozen surface. The arctic fox is not nearly such a clever animal as the common fox, and is very easily trapped. If a hunter follows one, it will certainly run into its hole; but a moment or two later it is almost sure to poke out its head in order to yelp at him, so that he is easily able to shoot it. The consequence is that these animals are destroyed in very great numbers for the sake of their skins, those with bluish fur being especially valuable.