[Pine.]

I noticed in your drawing that you were making your wolf howl so when wolves howl, their mouths are usually open 1-2 inches instead of closed most of the way. When they howl, their ears are also pushed back instead of in an erect position like an angry cat pushes his ears back. Despite having drawn the eyes open, wolves close their eyes when they howl and they look like a parentheses that is curved upward instead of to the right ) or the left ( . I also drew a ruff of fur on the neck and the chin since they have thick coats. Another thing about the ears is that they are very fluffy so they need a lot of ruffling. I hope this helps some I'll do another version of this for you with the mouth closed and the ears erect.