THIS animal is generally white, variegated with red and black. It is a native of the Brazils, but now domesticated in most parts of Europe, and is about the size of a large rat, though more stoutly made, and without any tail; and its legs and neck are so short, that the former are scarcely seen, and the latter seems stuck upon its shoulders. Guineapigs, though they have a disagreeable smell, are extremely cleanly, and the male and female may be often seen alternately employed in smoothing each other’s skins, disposing their hair, and improving its gloss. They sleep like the hare with their eyes half open, and continue watchful if they apprehend any danger. They are very fond of dark retreats; previously to their quitting which, they look round, and seem to listen attentively; then, if the road be clear, they sally forth in quest of food, but run back on the slightest alarm. They utter a sound like the snore of a young pig. The female begins to produce young when only two months old, and as she does so every two or three months, and has sometimes as many as twelve at a time, a thousand might be raised from a single pair in the course of a year. They are naturally gentle and tame; as incapable of mischief as they seem to be of good, although rats are said to avoid their locality. The upper lip is only half divided; it has two cutting teeth in each jaw, and large and broad ears. They feed on bread, grain, and vegetables. [Illustration: THE MOUSE. (_Mus musculus._)] THIS is a lively, active animal, and the most timid in nature, except the hare, and a few other defenceless species. Although timid, he eats in the trap as soon as he is caught; yet he never can be thoroughly tamed, nor does he betray any affection for his assiduous keeper. He is beset by a number of enemies, among which are the cat, the hawk, and owl, the snake, and weasel, and the rat himself, though not unlike the mouse in his habits and shape. The mouse is one of the most prolific of animals, sometimes producing seventeen at a birth; but it is supposed that the life of this small inmate of our habitations does not extend much further than three years. This creature is known all over the world, and breeds wherever it finds food and tranquillity. There are Mice of various colours, but the most common kind is of a dark, cinereous hue: white mice are not uncommon, particularly in Savoy and some parts of France.