Baically the animals that used their smarts and cleverness were banned from the pridelands. So baically not all of the animals are considerd to be pert of the ''circle of life''
Here's some examples:
https://www.youtube.com/watch?v=ZPMHySkS9RU
https://www.youtube.com/results?search_ ... ckal+style
https://www.youtube.com/watch?v=aCzg8YFWtg0