There is the possiblity to animate this, even as a fiberglass cast. You can cut the bottom jaw off and hide the pivot with the fur. You could attached a silicone lip to the fg with spandex to make it stretch. You could also make eye lids out of laytex for an eye blink, and make the eyes move left to right.
I had even thought of casting a silicone skin for this backed by a FG skull. That way I could punch the fur into it for a more refined finish detail. Then you could go crazy with animation to include nostril flares, ear wiggles, etc..
For now though I'll start with just a static piece. If I turn it into a costume I may do some animation.