VINCENT CARRUTHERS is a well-known environmentalist and author. He co-authored South African Frogs: A Complete Guide. He served for seven years as a director of the North West Parks and Tourism Board and was Vice Chairman of the Magaliesberg Advisory Committee. He is a past executive director of the Wildlife Society of SA and chairman of Birdlife SA. He currently consults on environmental and tourism matters and is the author of several books on wildlife, history and conservation. He is on the board of the Delta Environmental Centre and the Sustainable Tourism Research Institute of SA.
LOUIS du PREEZ is a professor of Zoology at the North-West University, South Africa, where he heads the African Amphibian Conservation research group. His research interest lies with frogs and their parasites, subjects on which he publishes regularly.