BTNNagaHydralisk

Could be because it is an icon for a skin used on a Hydralisk model.

And if it looks like crap, why isn't it brown?

this Icon looks like crap. Too much black and there's nothing in the mouth area apart from black also.

This is the icon for my Naga Hydralisk skin.

Link to the skin:
http://www.wc3sear.ch/?p=Skins&ID=3619