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Arca

Koala

Phascolarctos cinereus

Conservation status IUCN: Vulnerable· VU
Koala (Phascolarctos cinereus)
Photograph from Wikimedia Commons · Wikipedia article (it)

Where the name comes from

Koala comes from an Aboriginal language of New South Wales, perhaps gula, often read as “does not drink”: the animal takes almost all its water from leaves. Phascolarctos is Greek for “pouched bear”, from pháskōlos, pouch, and árktos, bear — though it is no bear at all; cinereus, Latin, “ash-grey”.

Facts

Group
Mammals · Mammalia
Order
Diprotodont marsupials
Habitat
Eucalyptus forest
Range
Eastern and south-eastern Australia
Size
60–85 cm, 4–15 kg
Diet
A specialist herbivore — eucalyptus leaves
Lifespan
13–18 years

Characteristics

  • 01

    It eats nothing but eucalyptus, toxic and impoverished leaves it neutralises with a specialised liver.

  • 02

    It sleeps up to 20 hours a day to save the energy its diet denies it.

  • 03

    It has fingerprints all but indistinguishable from human ones, unique among marsupials.

What sets it apart

Koala joeys are not born able to digest eucalyptus: before weaning the mother produces a special mush, a soft dropping called pap, which the young eats directly. With it come the gut bacteria needed to dismantle the toxins in the leaves. Without that unappetising meal it could not survive on the only food it will ever have: its own diet has, quite literally, to be inherited.

Next species

Tasmanian devil

Sarcophilus harrisii