My Grandad used to be known as "the Silver Fox", down in Victoria, as he maintained that he kept seeing a silver fox. Turns out that he was right, someone shot it.
He also maintained that he'd seen Tasmanian Tigers, which I still refuse to discount as a possiblity.
Pumas have been reported in Stawell, and have there have been photos of American forces with their "mascots" in Oz. However, unless they "hook up" with another bog cat, then they must be reall really old by now.
The Lithgow Panther was a great story recently, as they were touting "90 plus cm long". I measured Kerry's cat "Lestat" 93cm tip of tail to tip of nose, and was 12kG at the time