New Support for Some Extinct Tasmanian Tiger Sightings
nytimes.com
nytimes.com
" Dr. Brook’s analysis found there to be a very small chance that the thylacine is still around today. For that possibility, Mr. Mooney said that even if Tasmanian tigers did persist past 1936, the likelihood of their still being around shrinks all the time. Someone should have found one by now, given the high levels of roadkill in Tasmania and the increasing use of trail cameras in more remote parts. Dr. Brook agrees that we’re unlikely to discover surviving thylacines. "
https://www.science.org/content/article/giant-australian-ins...
Though there have been many like it.
As for thylacines themselves, they've been discussed here and elsewhere. They're probably extinct, but they haven't really left, since they turn up in film and fiction, and they may be coming back, if de-extinction works.