What is the primary reason that animals are attracted to the african savanna?

Most animals were attracted to the African Savanna because of vegetation in which half of the plants there were considered as "edible." Furthermore, they were also a huge presence of its preys at the area thus food access is significantly better than of the desert regions in Africa.

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.