Could you be a little more specific?
For example:
- What is his Eye/Nose/pawpad colour
- Does he have a certain haircut?
- is his fur just grey-black (with markings like a natural wolf? for example: the belly is lighter than the back)
- what kind of personality does he have? ( strong and self confident or rather shy?)
Those are just some tips. But that would help me a lot if I find time to draw him.