There are numerous strands of the werewolf virus. Some of them turn you in a full on wolf, some of them make you lean and muscular, some of them make you big and bulky, some of them make you lose your humanity, some of them just give you a tail, and the worst, most dreaded strand of all gives you green hair.

(the first version of her had green and yellow fur all over but I reconsidered. That was a bit too evil.)