Grumpy Monkey

Grumpy Monkey by Suzanne Lang and Max Lang

Everybody thinks that Jim Panzee is grumpy. However, he is convinced that he is not. He keeps changing his appearance after people identify some part of grumpiness. Finally he gives up and hangs out with a friend who is grumpy - because he danced with a porcupine. The book is pretty good until that final part. Skipping the porcupine part would have made it better.