"Very good, Peter," said Old Mother Nature. "But there are two very important differences which you have not mentioned. Striped Chipmunk has a big pocket on the inside of each cheek, while his cousins of the trees have no pockets at all."

"Of course," cried Peter. "I don't see how I came to forget that. I've laughed many times at Striped Chipmunk with those pockets stuffed with nuts or seeds until his head looked three times bigger than it does now. Those pockets must be very handy."

"They are," replied Striped Chipmunk. "I couldn't get along without them. They save me a lot of running back and forth, I can tell you."

"And the other great difference," said Old Mother Nature, "is that Striped Chipmunk sleeps nearly all winter, just waking up occasionally to pop his head out on a bright day to see how the weather is. A great many folks call Striped Chipmunk a Ground Squirrel, but more properly he is a Rock Squirrel because he likes stony places best. Supposing, Striped Chipmunk, you tell us where and how you make your home."