After hanging a "Keep Out" sign on his playhouse, Monster realizes, when he goes inside to eat cookies and milk by himself, that having everything to himself isn't always enough--sometimes the best things can only be enjoyed when they are shared.
- ISBN10 0140508775
- ISBN13 9780140508772
- Publish Date 3 October 1988
- Publish Status Out of Print
- Out of Print 10 August 1995
- Publish Country GB
- Imprint Puffin Books
- Edition Open market ed
- Format Paperback
- Pages 24
- Language English