This is a List of Kenya Wildlife which may be seen on a typical safari. A qualified guide will be able to identify these animals and give information on their behavior.
For detailed information on the wildlife you should consider getting a good field-guide or bush-guide on mammals. It is invaluable and best purchased before your arrival. ('The Safari Companion' is one of them, as well as 'Beat about the Bush'!)
Kenya has two important Wildlife areas; some species can only be found in the arid areas and others only in the northern ones. Because of a short and a long rainy season, Kenya is excellent for viewing game as it can support a higher density of animals than other African countries.
I have created a separate page about the Birds of Kenya, as they deserve a place just for themselves! And it would have been too much for this one.