- *On the Verge of Extinction: The Life and Times of the Black Rhino* (1993)
- *The Last Rhinos: The Fight to Save One of the Worlds Most Ancient Species* (2014)
Novels:
- *Raining Fire* (1993)
- *The Leopard Tree* (1992)
- *The Eye of Heaven* (1991)
- *Dark Harvest* (1991)