<< mhkay so I totally know this is Tonks but after seeing the hair and not looking at anything else I immediately thought it was Amy Gumm from the wonderful, recommendable Dorothy Mist Die series by Danielle Paige
Marah, a powerful, and dangerous hellhound. She lives in the wild, and even the werewolves fear her. She is dangerous, and powerful. She tends to kill for pure fun She and even kill the unkillable. she has two different colored eyes.