... It's ok.
I'm not saying it as the worst or the best bio.
You could've said a demonic wolf, instead of a winged demonic wolf. And instead of saying angel wolf mom, demon wolf dad, you could've said an angel for a mother and a demon for a father.
Also, the history is quite long with a short personality. I understand that some of the history has some of her personality, but why such a short personality?
Another thing, titles are to be capitalized. Karra is Karra. Not karra. (Sorry, I don't mean to be rude. I guess since I'm sick, I'm teaching others. >.<) *Le sigh*
I saw a couple more mistakes, like more than one period, (unless you were pausing like '...') little spelling, capitalization, wording/grammar, and punctuation.
Other than that, it's alright!