When Six, a pink armadillo with nine green siblings, brags that he is "#1" in everything, his family expresses a different opinion.
- ISBN10 0670035645
- ISBN13 9780670035649
- Publish Date 13 October 2003
- Publish Status Out of Print
- Out of Print 18 June 2016
- Publish Country US
- Publisher Penguin Putnam Inc
- Imprint Viking Press Inc
- Format Hardcover
- Language English