Built for the Dark
When the sun goes down, a whole hidden world wakes up. The animals of the night can't switch on a light — so instead they are built, in the most astonishing ways, to live in the dark.
Eyes that drink the light:
A tawny owl has huge eyes that gather up every last scrap of light. And many night animals, like foxes and cats, have a special mirror-like layer behind the eye called a tapetum — it bounces light straight back so the eye gets to use it twice. That is exactly why their eyes flash back at you in a torch beam.
Ears, noses and whiskers:
An owl's two ears sit at slightly different heights, which lets it pinpoint the tiniest rustle in pitch blackness. A hedgehog or a badger follows its nose to find food by smell. A wood mouse feels its way with long whiskers, so it never bumps about.
Seeing with sound:
Cleverest of all, a bat calls out into the night and listens to the echoes bouncing back — using sound to "see" the darkness it cannot look through.
💡 Fun Facts
- Night animals like the tawny owl have big eyes that gather up every scrap of light.
- Foxes and cats have a mirror-like layer behind the eye called a tapetum — it bounces light back so the eye uses it twice, which is why their eyes flash in a torch beam.
- An owl's ears sit at slightly different heights, so it can pinpoint a rustle in total darkness.
- A hedgehog or a badger sniffs out its supper with a brilliant nose.
- A wood mouse feels its way with long whiskers, and a bat shouts and listens to echoes to "see" in the dark.