An old man tells his grandchildren about a sheep dog named Herman who, during the days when dogs and cats ruled the world, discovered the first humans.
- ISBN10 006022164X
- ISBN13 9780060221645
- Publish Date 1 March 1991
- Publish Status Out of Print
- Out of Print 7 July 2021
- Publish Country US
- Imprint HarperCollins Publishers
- Format Hardcover
- Pages 32
- Language English