Plausable, at best.
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I certainly wouldn't say it resembled a Kangeroo.
Anyway, it's doubful. The last known existing Thylacine died in Hobart Zoo on 7th September, 1936. Since then none have been captured or even accurately seen and detailed. And people have searched and searched and searched. I'm sure it's not that elusive. There would have had to be enough of them to continue on a species which means, i'd say, at least 15-20 and with those numbers it shouldn't be too hard to find proof, which there is none.
Thylacine was declared extinct by international standards in 1986, which was 50 years without seeing a single animal.
Here is a list of searches and sightings since the animals extinction:
QUOTE
1937 - Seargent Summers leads a search in the north-west of he state, recording many recent sightings by other persons in a large area between the Arthur and Pieman Rivers, although the party itself did not see any thylacines. He recommends a sanctuary in that area.
1945 - Well-known naturalist David Fleay searches the Jane River to Lake St Clair area, finding possible thylacine footprints.
1959 - Eric Guiler leads a search in the far north-west, an area which produced many bounties and finds what appeared to be thylacine footprints.
1963 - Eric Guiler leads a search in the Sandy Cape area but finds no evidence.
1968 - Jeremy Griffiths, James Malley and Bob Brown embark on a major search. Although they collect reports of sightings, they find no evidence of the thylacine.
1980 - Parks and Wildlife Officers, Steven Smith and Adrian Pyrke, search a wide area of the State using three automatic cameras. No evidence of thylacines is found.
1982-83 - Parks and Wildlife Officer, Nick Mooney, undertakes an extensive but unsuccessful search to confirm the 1982 sighting reported by Hans Naarding near the Arthur River in the State's north-west.
1984 - A search in Tasmania's highlands by Tasmanian Wildlife Park owner, Peter Wright, fails to turn up conclusive evidence.
1988-93 - Separate photographic searches by wildlife photographer, Dave Watts and Ned Terry fail to record a thylacine.
Failed and unsucessful are both strong words there as you can see. I don't believe it exists anymore personally, there's just too much evidence piling up against it.
My source: Please see this site for further information.
http://www.dpiwe.tas.gov.au/inter.nsf/WebP...HAN-53777B?open