a werewolf like creature... like a xenomorph i guess the werewolf curse or gift will turn you into someting more feralic but based in your basic body... so a bird turning into a werewolf like creature will have stronger muscles... big claws strong wings and a sharp beack...

but now if we look on a monkey... it will have a strong upper body big muscles a fuzzy tail and big fangs ^^

anyway this is just an sketch and still to add some other features... maybe clothes and accesories ^^