Mercer Mayer is an American children's author and illustrator. He has published over 300 books, using a wide range of illustrative styles. Mayer is best known for his Little Critter and Little Monster series of books.
Doctor by Mercer Mayer was a cute and simple book in my opinion. I thought that the illustrations did great job at telling a story of Little Critter using his imagination to be a doctor and finding that sometimes there is one cure that works best. I believe that this story would be best interpreted by students in preschool or kindergarten As a future early elementary teacher I probably would include this in my library. I want to teach a unit over community helpers and I believe that this book would be a good one to have accessible for the students.