My mans a Tazzie fellow, he doesnt think it is!!!
To me it looks a little bit like a cross between a Ridgeback and a Grey Hound.
By Its length and the way It moves It could be!!!

Mystery Creature - Thylacine??
http://www.youtube.com/watch?v=QEdcMjcFASA

Could be best evidence yet of the existence of the Tasmanian Tiger.
The last known wild Thylacine to be killed was shot in 1930, by farmer Wilf Batty in Mawbanna, in the North East of the state. The animal (believed to be a male) had been seen round Batty's hen houses for several weeks.
The last Thylacine, later referred to as Benjamin[f] (although its gender has never been confirmed) was captured in 1933 and sent to the Hobart Zoo where it lived for three years. It died on 7 September 1936 (now known as National Threatened Species Day in Australia).It is believed to have died as the result of neglect — locked out of its sheltered sleeping quarters, it was exposed to a rare occurrence of extreme Tasmanian weather: baking heat in the day and freezing temperatures at night.

http://www.youtube.com/watch?v=QEdcMjcFASA

Video Footage Of The Last Tasmanian Tiger
http://thewrongadvice.com/lazy-monkey/vide...asmanian-tiger/

DPIW - Tasmanian Tiger
http://www.dpiw.tas.gov.au/inter.nsf/WebPages/BHAN-53777B

I agree that it looks like a greyhound. Brindle greyhounds have stripes on their back.

I'm Tasmanian. Though I've never seen one in the flesh, it looks like a thylacine. The snout and the thickness of the tail look authentic. My only query is the size? If real, it has to be immature. Fully grown those mothers are big!