Everyone's favorite grump, Jim Panzee, star of the #1 New York Times bestselling Grumpy Monkey series, has caught a bad case of spring fever and wakes up feeling very silly in this delightful new picture book.When Jim runs through the jungle laughing and shouting with glee,  the other animals are very concerned.  This just isn’t the grumpy Jim they know.  Soon Norman diagnoses Jim with a bad case of spring fever and tells Jim that he needs to find a cure. The other jungle ani