This guide provides concise overviews of physical characteristics, mating, aggression, etc. for common and some not so common species. It is invaluable as a reference and will be valuable after your trip. This book is found on most safaris and at most lodges (at least in Botswana). For me---the omnipresnces made me want a copy rather than just having had the experience of looking at the one's in the land rover. The versions for sale in Africa often are inferior in terms of printing and paper (also, more expensive).