Conservation Status

Unlike many native animals, particularly smaller ones, the Sugar Glider is not endangered.Despite the massive loss of natural habitat in Australia over the last 200 years, it is adaptable and capable of living in surprisingly small patches of remnant bush, particularly if it does not have to cross large expanses of clear-felled land to reach them.

Several close relatives, however, are endangered, particularly Leadbeater's Possum and the Mahogany Glider (which, to the non-expert, looks almost exactly like a Sugar Glider). The Sugar Glider is protected by law in Australia, where it is illegal to keep them without a permit,or to capture or sell them without a licence (which is usually only issued for research).
source : http://en.wikipedia.org