Big sleepers and light sleepers
Some spend almost their whole life asleep, others barely sleep. In between are those that hibernate all winter and those that build a new bed every evening.
- 1
Koalaabout 20 h a day
Eucalyptus leaves give it very little energy, so it saves it by sleeping almost all the time.
- 2
Giraffeunder 2 h a day
Always watching for predators, it sleeps very little, often in short naps.
- 3
Edible dormousehibernates ~7 months
A true winter-sleep champion: it can stay asleep about seven months a year.
- 4
European hedgehoghibernates all winter
Curled up in a nest of leaves, it slows its whole body down until spring.
- 5
Hazel dormousea woven nest on the ground
It hibernates in a little nest it weaves itself and places on the ground.
- 6
Red squirreldoesn't hibernate
Contrary to popular belief, it stays active all winter, living on the food it hid in autumn.
- 7
Chimpanzeea new bed every night
Every evening it builds a new nest of branches in a tree to spend the night.
- 8
Western gorillaa nest of leaves
It too makes a fresh nest of branches and leaves each evening, often on the ground for the heaviest.
Quiz question
How many hours a day does the koala sleep?
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