Ive got quite a lot in my collection, but these are some of my favourites:
Alison, Peter, Whatever You Do, Don't Run: My Adventures As A Botswana Safari Guide, USA, Allen & Unwin, 2007. (his sequal Whatever You Do Don't Look Behind You is hilarious also)
Fraser, Caroline, Rewilding The World, New York, Picador, 2009.
Matson, Tammie, Dry Water: Diving Headfirst Into Africa, Sydney, Hodder, 2006.
Matthiessen, Peter, The Snow Leopard, London, Picador, 1979.
Owens, Mark & Delia, Cry Of The Kalahari, Great Britain, Fontana Collins, 1984.
Richards, Michael W, and Tyabji, Hashim, Tigers, London, New Holland Publishers, 2008. (this is the book about the making of the documentary Tiger Spy Cam)
Russell, Franklin, Season On The Plain, New York, Penguin, 1974.
Schaller, George B, The Deer And The Tiger: A Study Of Wildlife In India, Chicago, University Of Chicago Press, 1967.
Singh, Arjan, Tiger Haven, London, Macmillan, 1973.