오스트레일리아에 서식하며 유칼립투스 잎을 먹고 사는 곰을 닮은 나무 위 생활을 하는 유대류 동물.
A bearlike arboreal Australian marsupial with thick gray fur that feeds primarily on eucalyptus leaves.
예문:
"The koala spent most of its day sleeping high up in the eucalyptus tree."
"Conservationists are working hard to protect the natural habitat of the koala."
"Unlike many other mammals, the koala has a specialized digestive system to handle toxic leaves."