Any of various small arboreal marsupials of the family Phalangeridae, of Australia and adjacent islands, having a long tail and dense woolly fur and including the cuscus and the flying phalanger.

袋貂结趾科中的于树上的小型有袋动物，生澳大利亚及其毗临岛屿上，有浓密的皮毛，包括袋猴飞行袋貂。

Squirrels are arboreal creatures.

松鼠是于树上的动物。