The hilarious #1 New York Times bestselling picture book about a chimpanzee in a very bad mood--perfect for young children learning how to deal with confusing feelings, especially during the transition back to school.

Jim the chimpanzee is in a terrible mood for no good reason. His friends can't understand it--how can he be in a bad mood when it's SUCH a beautiful day? They have lots of suggestions for how to make him feel better. But Jim can't take all the advice...and has a BIT of a meltdown. Could it be that he just needs a day to feel grumpy?

Suzanne and Max Lang bring hilarity and levity to this very important lesson on emotional literacy, demonstrating to kids that they are allowed to feel their feelings.

Jim Panzee is back and grumpier than ever in Grumpy Monkey: Party Time and Grumpy Monkey: Up All Night!