By the same person who wrote Scrambled States of America, this book is about manners. I actually liked this one, the animals depicted are anthropomorphized but the quirky style that Keller illustrates in is more attractive.
A Rabbit learns that some Otters are moving in next door. He is upset about this because he hasn't met an Otter before. The Owl advises him to "do unto Otters as you would have them do unto you." Okay, its a bad Golden Rule pun and the complete basis of the story.