“They are well-built little houses and have one or more little doorways on the under side when they are in bushes or trees. Inside is a warm, soft bed made of milkweed or cattail down, the very nicest kind of a bed for the babies. No one has a neater home than the Harvest Mouse. He is quite as much at home in bushes and low trees as Happy Jack Squirrel is in bigger trees. His long tail comes in very handy then, for he often wraps it around a twig to make his footing more secure. “Now this is all about the native Mice and--what is it, Peter?” “You've forgotten Nibbler the House Mouse,” replied Peter. “How impatient some little folks are and how fearful that their curiosity will not be satisfied,” remarked Old Mother Nature. “As I was saying, this is all about our native Mice; that is, the Mice who belong to this country. And now we come to Nibbler the House Mouse, who, like Robber the Brown Rat, has no business here at all, but who has followed man all over the world and like Robber has become a pest to man.” Peter Rabbit looked rather sheepish when he discovered that Old Mother Nature hadn't for gotten, and resolved that in the future he would hold his tongue. “Have any of you seen Nibbler?” asked Old Mother Nature. “I have,” replied Danny Meadow Mouse. “Once I was carried to Farmer Brown's barn in a shock of corn and I found Nibbler living in the barn.” “It is a wonder he wasn't living in Farmer Brown's house,” said Old Mother Nature. “Probably other members of his family were. He is perfectly at home in any building put up by man, just as is Robber the Rat. Because of his small size he can go where Robber cannot. He delights to scamper about between the walls. Being a true Rodent he is forever gnawing holes in the corners of rooms and opening on to pantry shelves so that he may steal food. He eats all sorts of food, but spoils more for man, by running about over it, than he eats. In barns and henhouses he gets into the grain bins and steals a great deal of grain. “It is largely because of Robber the Rat and Nibbler that men keep the Cats you all hate so. A Cat is Nibbler's worst enemy. Nibbler is slender and graceful, with a long, hairless tail and ears of good size. He is very timid, ready to dart into his hole at the least sound. He raises from four to nine babies at a time and several sets of them in a year. “If Mr. and Mrs. Nibbler are living in a house, their nest is made of scraps of paper, cloth, wool and other soft things stolen from the people who live in the house. In getting this material they often do great damage. If they are living in a barn, they make their nest of hay and any soft material they can find.