Socks is the name of the newest character to be created by Beverly Cleary. He is a young tabby cat with four white paws, and he lives happily with a young married couple, Marilyn and Bill Bricker. The center of the Bricker household, Socks rules it affectionately but firmly.

Into this loving home, however, comes another pet. This creature has a small, wrinkled, furless face, and Mr. and Mrs. Bricker spend an inordinate amount of time trying to burp it. Its arrival fills Socks with jealousy and a terrible anxiety. How the rivalry between Socks and Charles William, the Bricker baby, turns into an alliance makes a domestic drama both touching and funny.

Although her story is about a cat and faithful to his point of view in every detail, Mrs. Cleary demonstrates with it the emotional upheaval experienced by a child who must learn to share his parents. As young readers come to understand Socks and his problems, they will gain a new understanding of themselves. But, most of all, they will laugh.