Hello there!
I have a few minor suggestions. I know little about modeling and the process of incooperating new features into a game. But I do have some ideas that seem do able.
It would be cool if while creating or editing your character, you would have a selection of eye types. For example, instead of the more traditional eye there could be slit eyes, solid color eyes, etc. For all available animals.
Another suggestion of mine is to add a tail wagging secondary action (With the wolf or other animals). Of course, it would be continuous so as when you walk, crouch, sit, or lie down you would be wagging your tail until you stop the action.
That's all I have for now. Thanks!