The animals of Firefly Island listen as Tortoise explains such mysteries as why frogs croak at night.
- ISBN10 009929401X
- ISBN13 9780099294016
- Publish Date 21 July 1994 (first published 31 August 1992)
- Publish Status Out of Print
- Out of Print 11 July 1996
- Publish Country GB
- Publisher Penguin Random House Children's UK
- Imprint Red Fox
- Edition New edition
- Format Paperback (B-Format (198x129 mm))
- Pages 128
- Language English