A Worker And A Robber
"Now we come to the largest family of the Rodent order, the Rat family, which of course includes the Mice," said Old Mother Nature, after calling school to order at the old meeting-place. "And the largest member of the family reminds me very much of the one we learned about yesterday."

"I know!" cried Peter Rabbit. "You mean Jerry Muskrat."

"Go to the head of the class, Peter," said Old Mother Nature, smiling. "Jerry is the very one, the largest member of the Rat family. Sometimes he is spoken of as a little cousin of Paddy the Beaver. Probably this is because he looks something like a small Beaver, builds a house in the water as Paddy does, and lives in very much the same way. The truth is, he is no more closely related to Paddy than he is to the rest of you. He is a true Rat. He is called Muskrat because he carries with him a scent called musk. It is not an unpleasant scent, like that of Jimmy Skunk, and isn't used for the same purpose. Jerry uses his to tell his friends where he has been. He leaves a little of it at the places he visits. Some folks call him Musquash, but Muskrat is better.