The idea of a native cat in Australia that has escaped the attention of white people for 200 years and aboriginals for several thousand in weird.
Could it be possible.?
The only recognised cat like animal native to Australia are the tiger cats which look like a cross between an otter and a weasel.
The only other native animal that might fit the "big cat" look is wakaleo which is a supposedly extinct form of thylacoleo, the extinct marsupial lion,which was first identified in 1859.
There are some eamples of cat like animals in very early rock art forms called "the bradshaws" which appear to predate the aboriginals in Australia.
The art work looks like it is Indian influenced and looks nothing like the "standard" koori art.
Big Cats in Australia.!