Are koalas considered to be endangered animals?

No.

As of 2012, koalas are not endangered. Current population estimates by the Australian Koala Foundation put the figure at around 80,000, but the trend seems to be dropping. Although the koala is not endangered, on 30 April 2012, the federal government moved to include koalas on the list of threatened species. The 'threatened' designation only applied to the most at-risk populations in Queensland, NSW and the ACT.