Numbers have dropped from more than 80,000 in 2018, to fewer than 58,000 now.
Australia has lost around 30 percent of its koalas over the last three years.
It's because of droughts, bushfires, and developers cutting down trees.
The Australian Koala Foundation is urging the country's government to do more to protect the creature's habitat.
The non-profit group says numbers have dropped from more than 80-thousand in 2018, to fewer than 58-thousand now.

Possibility Of Over 10,000 Fatalities As Venezuela Declares State Of Emergency After Two Large Earthquakes
Oil Prices Dip Again As US-Iran Talks Progress
Keir Starmer Resigns As British Prime Minister
US And Iran Pull Out Of Peace Deal Signing Ceremony
US And Iran Say Deal Reached To End War