Doctor DeSoto
William Steig
 The story is about Dr. De Soto, a mouse-dentist who lives in a world of animals who act as humans. He and his wife, who serves as his assistant, work together to treat patients with as little pain as possible. Dr. De Soto uses different chairs, depending on the size of the animal, with Mrs. De Soto guiding her husband with a system of pulleys for treating extra large animals. However, they refuse to treat any animal who likes to eat mice. One day, a fox with a toothache drops by and begs for treatment. Mrs. De Soto convinces her husband that he needs to help the fox to get rid of his pain, so Dr. De Soto reluctantly agrees. They give the fox some anesthetic and proceed to treat the bad tooth. However, while under the effects of the anesthetic, the fox unknowingly exclaims how he would love to eat the mice, but also expresses it is crass to attempt to eat someone who had just relieved him of much pain. The De Sotos remove the bad tooth, and tells the fox to come back tomorrow to get a false tooth. Later that night, Dr. De Soto expresses his disgust that they trusted a fox who had hoped to eat them, although Mrs. De Soto claims that the effects of the anesthetic just got to him. They prepare the new tooth, but come up with a plan to place it in without getting eaten. The next day, which was originally the De Sotos' day-off, the fox comes back much happier than before and anxiously awaits the placement of his new tooth. The De Sotos proceed with their work, but the fox is licking his lips and thinking about eating the mice. The De Sotos use a long stick to open his jaws and put in the new tooth. However, the fox has decided to eat them. Fortunately, his jaws were held tightly apart from each other, so he couldn't trap them in his teeth. Dr. De Soto uses a special mouth glue and spreads it onto the fox's teeth. When the fox closes his mouth, his teeth were stuck together! The De Sotos told him to wait a few days or a few hours before the special glue wore off (they kept their plan a secret from the fox and pretended that it was part of the treatment). The fox then went home, not realizing that he had been tricked, but clearly disappointed that he couldn't eat the De Sotos. The book ends with the DeSotos triumphant at having "outfoxed the fox". Mrs. De Soto joins her husband for a day off work and says she will never again disagree with his policy of refusing to do business with hostile animals.