When Rodney Rat receives a talking robot for his birthday, he is delighted to find that it can easily pronounce the letter r with which he struggles. The robot is a huge hit with his classmates too until Camilla Capybara returns to school from a stay out West. Not only does the "World's Meanest Rodent" (unpaginated), bully the other students and the teacher, Miss Fuzzleworth, but she picks on Rodney when his robot quits working, and his stutter becomes obvious. But the funny sounds it starts to make as its battery runs down remind Camilla of the animals that most frighten her, and she ends up leaving once again. Although Camilla is not very nice since she picks on the others, the author makes sure to include a scene in which she is the only one who figures out what's wrong with the robot. The illustrations are filled with details that bring these rodents and their teacher to life. I simply love Miss Fuzzleworth with her cat's eye glasses perched across her face.