Dismayed and disgusted at the thought of a rat as the class pet, Rosemary is soon won over by the adorable rat named Cheese, and when Cheese's existence is threatened, Rosemary frees him and wonders how she will keep him hidden from her family, in a humorous story accompanied by advice on how to care for a pet rat.
Rosemary is excited when the class takes a field trip to the pet store to find a class pet. She is disappointed and repulsed, however, when the class chooses a rat. Rats are dirty and live in sewers, Rosemary contends. As she gets to know the grey and white rat the class has named Cheese, Rosemary soon becomes attached. Soon Rosemary really cares a lot about Cheese, so much so that when Brian, who's been designated to take him home for the weekend, gloats about Cheese as "cat bait," Rosemary takes matters into her own hands, sneaking him home in her backpack. Some hilarious consequences ensue, first at her orthodonist, and then at home with her baby brother.
This one's a very fast-paced, very funny, and very lighthearted read that will appeal to even the most reluctant reader, espeically the 2nd-3rd grader who's ready to tackle chapter books. Not only will kids find it enjoyable, but they'll learn a lot about rats as well, including an afterword on how to keep them as pets.