Facts about Koala

1. 07

   In Queensland's fragmented forests, koala populations have declined by approximately 80% since European settlement in 1788, primarily due to habitat loss and disease.

   KoalaMay 14shareconservationhistorypopulation
2. 06

   During the breeding season, male koalas mark their territory by rubbing their chest gland against tree trunks, leaving a dark oily secretion that signals dominance to other males within a 1-kilometer radius.

   KoalaMay 14sharebehaviorreproductioncommunication
3. 05

   Koalas spend 18 to 22 hours daily sleeping or resting, the highest sleep duration of any land mammal, due to their low-energy eucalyptus diet requiring minimal activity.

   KoalaMay 14sharebehaviormetabolismbiology
4. 04

   A koala's vocal cords produce deep bellowing calls reaching 89 decibels, among the loudest sounds made by any marsupial, used primarily by males during breeding season.

   KoalaMay 14sharebiologybehaviorcommunication
5. 03

   Fingerprints on koalas are so similar to human fingerprints that they could theoretically contaminate crime scenes, sharing the same ridge patterns and whorls.

   KoalaMay 14sharebiologyanatomyidentification
6. 02

   Eucalyptus leaves, the koala's primary food source, are toxic to most animals but koalas possess specialized liver enzymes that neutralize the poisonous compounds.

   KoalaMay 14sharebiologydietadaptation
7. 01

   The koala's brain comprises only 0.8% of its body weight, making it proportionally one of Australia's smallest-brained mammals despite their arboreal lifestyle.

   KoalaMay 13sharebiologymeasurementanimal