Judy Moody, M.D.: The Doctor Is In! by Megan McDonald, illus. by Peter Reynolds, brings back the irrepressible heroine as her class studies the human body. Taking a field trip to the hospital, performing an operation on a zucchini (they first ""take the Hippo oath [and] swear to the Hippo guy [to do their] doctor best"") and getting tonsillitis are just a few of Judy's adventures this time around. .