It looks like one of those part-serval/part-tabby cats.
A friend had one. It was an interesting critter and much smarter than the average house cat, which I'd rate as pretty danged slow* upstairs for a predator. It appreciated attention and was quite playful.
It was pleasing to the eye as well as being larger than most tabbies.
Here we go:
http://en.wikipedia.org/wiki/Savannah_%28cat%29* I still like house cats, they just ain't that bright on average. I think more of their predatory smarts have been bred out than in the average domesticated dog.