The dog is small, about the size of an ordinary cur. He is usually party-colored; black, white, brown, and brindle being the colors most predominant. The head is long, the nose pointed, the eyes small, the ears erect and pointed like those of the wolf. The hair is short and smooth, excepting on the tail, where it is long and straight, like that of the ordinary cur-dog. The natives never eat the flesh of this animal, and he appears to be in no other way serviceable to them but in hunting the elk. To us, on the contrary, it has now become a favorite food; for it is found to be a strong, healthy diet, preferable to lean deer or elk, and much superior to horse-flesh in any state. BURROWING SQUIRREL. There are several species of squirrels not different from those found in the Atlantic States. There is also a species of squirrel, evidently distinct, which we denominate the burrowing squirrel. He measures one foot five inches in length, of which the tail comprises two and a half inches only. The neck and legs are short; the ears are likewise short, obtusely pointed, and lie close to the head. The eyes are of a moderate size, the pupil black, and the iris of a dark, sooty brown. The teeth, and indeed the whole contour, resemble those of the squirrel. These animals associate in large companies, occupying with their burrows sometimes two hundred acres of land. The burrows are separate, and each contains ten or twelve of these inhabitants. There is a little mound in front of the hole, formed of the earth thrown out of the burrow; and frequently there are three or four distinct holes, forming one burrow, with their entrances around the base of a mound. These mounds, about two feet in height and four in diameter, are occupied as watch-towers by the inhabitants of these little communities. The squirrels are irregularly distributed about the tract they thus occupy,--ten, twenty, or thirty yards apart. When any person approaches, they make a shrill whistling sound, somewhat resembling "tweet, tweet, tweet;" the signal for their party to take the alarm, and to retire into their intrenchments. They feed on the grass of their village, the limits of which they never venture to exceed. As soon as the frost commences, they shut themselves up in their caverns, and continue until the spring opens. BIRDS.