The Poo That Grew by Peter Bently

The animals were in a funk. The poop was EVERYWHERE. It stuck to paw and claw and trunk, To tail and horn and hair.

Dung beetles love to chew on other animals' tasty poo. But when the monkeys make fun of them for having such a stinky lunch, the beetles decide to munch elsewhere. What the monkeys didn't realise is that without the beetles, there's no one to clean up their business.