The lives of Bup the caveboy and his family are changed forever when an extraordinary creature teaches them to laugh and play.
- ISBN10 0152870008
- ISBN13 9780152870003
- Publish Date 29 April 1994
- Publish Status Unknown
- Publish Country US
- Imprint Harcourt Brace and Company
- Format Hardcover
- Pages 48
- Language English