The world's smallest gliding possum.

Taronga Zoo in Sydney reports a bumper year for the births of the feathertail glider (Acrobates pygmaeus), it is the world's smallest gliding possum[ and is named for its long feather-shaped tail. Although only the size of a very small mouse (65 to 80 mm and 10 to 14 g).

They can glide up to 25m at a time. Newborns are the size of a grain of rice. 

The tail is about the same length as the head and body combined, quite thin, moderately prehensile, and almost hairless except for two obvious rows of long, stiff hairs on either side. The tail, when held straight, looks like a double-sided comb. It is used to grip twigs and small branches, and to control gliding flight: steering and then braking. 

The coat is a uniform mid-grey, with dark patches around the eyes and often a white patch behind the ears. The underside is lighter; the ears are moderately large and rounded.

The natural habitat of the feathertail glider is the eastern seaboard of Australia, and the glider's distribution is from northern Queensland to Victoria.

The feathertail glider's diet includes nectar, pollen, and arthropods.

Like other gliding mammals, the feathertail glider has a skin membrane between the fore and hind legs, thicker than that of the other marsupials like the sugar glider, but smaller in proportion, extending only between the elbows and knees. It is monotypical for its genus.

It is not known how many are in the wild, but the numbers are considered insufficient, however, these cute little mammals have become a popular pet throughout the rest of the world.