The marsupial squirrel is a small, omnivorous, arboreal, and nocturnal tree possum belonging to the marsupial infraclass. The common name refers to its preference for sugary nectarous foods and ability to climb trees, much like a tree squirrel. Despite its name, it is not actually a squirrel species (because squirrels are not marsupials), it is descended from the sugar glider. They are covered in soft, pale grey to brown fur, which is lighter in color on their underside.

It is native to mainland Australia, New Guinea, Tasmania, and certain Indonesian islands.

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