Alright so I have been streaming Pokemon XD: Gale of Darkness on twitch the last few days, and that game is full of shadow pokemon you have to capture and purify. One of them is of course a Zangoose which I haven't caught yet. So shadow Zoa was an idea made based on that, and when I capture the zangoose im of course going to name it Zoa.

Original design for shadow zoa was drawn here: http://www.furaffinity.net/view/27959632/