I honestly don't know if its real or not, I couldn't tell! I'm thinking its not, given its location and the fact that it's in pretty good condition - not very faded or anything.
It is immediately adjacent to one of the Tasmanian Devil enclosures, which gives a great opportunity to compare two very different large carnivorous marsupials.
Ooooh, thats the first time one of my ZooChat photos has made it somewhere else that I know of. We should add it to your thread on where people's photos end up.
The head and posture appear very lifelike, I have seen photos of live ones in the Hobart zoo(s) which looked like that- maybe they copied a photo.
The colour isn't right though- perhaps they copied that from a (faded) museum specimen? In life they were grey with blackish (or very dark brown) stripes. Museum skins kept out of the light show this clearly.