Koalaコアラ

Phascolarctos cinereusVU— Vulnerable

The koala (Phascolarctos cinereus) is a tree-dwelling marsupial of eastern Australia's eucalypt forests, spending up to 20 hours a day asleep and feeding almost exclusively on eucalyptus leaves. Uniquely, mothers pass gut bacteria to their young through a specialized form of feces, allowing them to digest the toxic leaves. Populations have declined sharply from habitat loss, bushfires, vehicle strikes, and chlamydia disease, and the species is classified as Vulnerable, with some Australian states listing it as endangered.

Koala (reference photo)
Photo: Diliff / CC BY-SA 3.0 / Source / cropped

Species Data

Classification
Diprotodontia / Phascolarctidae Source
Distribution
Found along coastal eucalypt forests of eastern Australia, spanning southeastern Queensland, eastern New South Wales, Victoria, and southeastern South Australia. Source

Did You Know?

  • Its caecum measures roughly 2 meters long, among the largest relative to body size of any animal, and it produces specialized enzymes to neutralize toxic compounds in eucalyptus leaves. Source
  • Mothers feed a specialized form of feces to their young to transmit the gut bacteria needed to digest eucalyptus, a behavior found in few other animals. Source
  • Its name derives from the Dharug word 'gula,' meaning roughly 'no water,' reflecting how little it needs to drink. Source

Where to See This Species

9 facilities · 0 individuals

東京都多摩動物公園 (Toukyoutotama Doubutsu Kouen)TokyoOpened in 1958

「オーストラリア園」で展示。1984年10月25日、日本で初めてコアラを迎え入れた動物園のひとつ。 Source

Hirakawa ZooKagoshimaJR指宿枕崎線「五位野駅」から徒歩約20分、またはバスで「福平農協前」から「谷山・動物園行き」に乗車し終点下車。

日本やオーストラリアのコアラ飼育園と協力し、通算105頭という国内屈指の飼育実績を持つ。 Source

Higashiyama Zoo and Botanical GardensAichiOpened in 1937

「ししお」の転出により2025年3月17日時点でオス4頭・メス5頭の計9頭を飼育。 Source

Asahiyama ZooHokkaidoOpened in 1967

旭川市旭山動物園のWikipedia記事に飼育種として記載 Source

横浜市立金沢動物園 (Yokohama Shiritsu Kanazawa Doubutsuen)KanagawaOpened in 1982

横浜市立金沢動物園のWikipedia記事に飼育種として記載 Source

埼玉県こども動物自然公園 (Saitamakenkodomodoubutsu Shizen Kouen)SaitamaOpened in 1980

埼玉県こども動物自然公園のWikipedia記事に飼育種として記載 Source

神戸市立王子動物園 (Koube Shiritsu Ouji Doubutsuen)Hyogo阪急「王子公園」駅から西へ徒歩3分。

神戸市立王子動物園のWikipedia記事に飼育種として記載 Source

Nagasaki Bio ParkNagasakiOpened in 1980

長崎バイオパークのWikipedia記事に飼育種として記載 Source

Tennoji ZooOsakaOpened in 1915

天王寺動物園のWikipedia記事に飼育種として記載 Source

Latest news

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Conservation Story

Conservation Status

IUCNは2014年に「危急種(Vulnerable)」に分類。オーストラリア首都特別地域・ニューサウスウェールズ州・クイーンズランド州では2022年2月に絶滅危惧種指定を受けた。

Habitat

オーストラリア東部の沿岸ユーカリ林。約100万平方キロメートル、30の生態地域に分布する。

Threats

Conservation & Breeding Efforts

Sources

en.wikipedia.org ja.wikipedia.org

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FAQ

Why do koalas sleep so much?
Eucalyptus leaves are low in nutrients and energy, so koalas conserve energy by sleeping up to 20 hours a day. Source
What are the main threats to koalas?
Habitat destruction from urbanization and land clearing, bushfires, vehicle and dog strikes, and chlamydia disease are the leading threats, contributing to a population decline of tens of thousands in recent years. Source

Source: www.tokyo-zoo.net hirakawazoo.jp www.higashiyama.city.nagoya.jp www.iucnredlist.org