Nature Example
The Roaring Stag vs. The Rustling Mouse

The Red Deer Stag:
In autumn, male (stag) red deer try to impress female (hind) deer. They do this by roaring! They use powerful muscles to force a huge amount of air, creating a very strong, powerful vibration. This makes a very loud sound that shows other deer how big and strong they are.

The Wood Mouse:
A tiny wood mouse rustling in the leaves makes very small, weak vibrations. This quiet sound is very hard to hear, which is useful for hiding from predators like owls (who, by the way, have amazing hearing!).
💡 Fun Facts
- A red deer's roar can be as loud as a motorbike (around 100 decibels)!
- Some animals, like bats, make sounds that are too high-pitched for humans to hear. This is called 'ultrasound'.
- The quietest sound a human can hear is 0 decibels. A whisper is about 30 decibels.