Besides clearing dung, the actions of dung beetles have considerable ecological importance. For one, they serve as secondary seed dispersers.
Dung from monkeys, wild pigs, and other animals is riddled with seeds from the fruits they eat. When beetles bury their dung balls, they inadvertently protect these seeds from predators and increase the likelihood they’ll germinate. The advantage is so great that one South African plant has evolved to produce seeds that look and smell like dung to trick beetles into burying them.
From the TED-Ed Lesson Why isn’t the world covered in poop? – Eleanor Slade and Paul Manning
Animation by Anton Bogaty