The local people of Africa have many fables and legends about the origin of life and about the animals. On one of our trips the guide told us this story around the campfire;
Why the hippo spreads its dung

Why the hippo spreads its dung
In the beginning, when the world was young, the hippo lived in the water but instead of grass he ate fish. With his big mouth he could eat a lot of fish and soon he became bigger and rounder.
One day the Creator said to the hippo, "You are too greedy, you will eat all the fish!” The hippo promised to eat not so much