I've been wondering this for a bit, but why would you agree to draw a comic that's heavily centered on wolves if you can't draw wolves?
It'd be fine to use obvious CG models and only show basic silhouettes if the wolves showed up once in a minor scene, but the wolves show up all the time and are a major part of the story. Seems like the main thing they should have looked for when choosing an artist was someone who could draw wolves really well.