* Wide range of species: There are over 50 species of kangaroos and other macropods (animals like kangaroos, wallabies, and quolls) in Australia.
* Difficult to count: Kangaroos roam vast areas and are hard to track.
* Population fluctuations: Kangaroo numbers fluctuate based on factors like weather, food availability, and predation.
However, estimates suggest there are millions of kangaroos in Australia. For example, the Australian government estimates that there are around 45 million eastern grey kangaroos alone.
It's important to note that while kangaroos are abundant, some species are threatened or endangered due to factors like habitat loss, disease, and human activities.