http://www.threatenedspecies.environment.nsw.gov.au/tsprofile/profile.aspx?id=10601
"Yellow-bellied Glider - profile
Scientific name: Petaurus australis
Conservation status in NSW: Vulnerable
The Yellow-bellied Glider is a large, active, sociable and vocal glider. Adults weigh 450 - 700 grams, have a head and body length of about 30 cm and a large bushy tail that is about 45 cm long. It has grey to brown fur above with a cream to yellow belly, which is paler in young animals. The dark stripe down the back is characteristic of the group. It has a large gliding membrane that extends from the wrist to the ankle. It has a loud, distinctive call, beginning with a high-pitched shriek and subsiding into a throaty rattle."
There are six speices of gliders in Australia.
Greater Glider, Featertail Glider, Squirrel Glider, Sugar Glider, Yellow Bellied Glider and the Mahogany Glider. They vary in size from the Feathertail about the size of a field mouse up to the Greater Glider as big as a large domestic cat. They all can glide.