Originally Posted by
JDNSW
Rather to my surprise, almost sixty years ago, in 1966, I encountered a large feral cat in the middle of the Simpson Desert. There is no way that it was descended from a recently dumped pet. It is perhaps worth noting that Macassans were visiting the north coast of Australia from about 1400. Their boats would have frequently, if not always, carried cats (for keeping rat and mouse numbers under control on board), and since they were beached rather than anchored as often as not, it is virtually certain that some cats would have preferred a shore life to shipboard life.
Similarly, from the sixteenth century a number of Portuguese and a century later , Dutch, ships visited Australia and many were wrecked on the Australian mainland. All of these would have carried cats, and some would have survived shipwreck.
In fact, I seem to remember reading quite a few years ago that a study showed that genetically feral cats in northern Australia came from SE Asia not Europe, as is the case for those that arrived with the English colonisation.