Dr Baltar you make a fair point there, personally when I first saw it some years ago I thought fox straight away, also I agree your quite right in saying that it's impossible to rule out a canid, that said I think the tail/body ratio makes a dog unlikely, but this of course still leaves a mangy fox as a candidate, a good photo of which can be seen here-
http://news.bbc.co.uk/1/hi/wales/3757934.stm
MarionXXX, while I agree that the limb proportions seem a little too long, the length of the body is hard to judge, because of the action of it’s running, equally though this could be used to counter the argument that the body tail/ratio ruling out a dog.
in a canid the lower portion of the back leg is much closer to the length of the upper portion, as seen on the animal in the video. On a thylacine, the length of the leg below the ankle is very small compared to above
I cant agree with that, to me at least the measurements visible on the film do seem shorter than what you’d expect on a canid, admitidly though due to the quality of the film this is quite a subjective view. But as I said I find the apparent fuzz at the end of the tail worrying, in terms of identifying it as a Thylacine.
While there are many good arguments against this film’s authenticity, the animal if it is a mangy fox is too thick set from the diaphragm forward and too robust generally, the neck appears too short for a fox and more in keeping with a Thylacine. As for the head it’s too indistinct to comment on, but the stiff way the tail is carried, fuzz aside, I would say is uncharacteristic of a dog or fox.
Maybe if we knew the speed and size of the animal, it would be easier to say something persuasive about its gait, but so far I find what Zilch says convincing.
Returning to Dr Baltar’s point, while it is easy to overlook this as very mundane, on looking again despite the very well observed points raised against it here, I feel that overall what we’re seeing here is most likely to be a Thylacine.