The henge covered in the rulebook I have are Fox, Cat, Dog, Racoon Dog (Tanuki), Rabbit, and Bird.  Though if we move to America as a setting or otherwise muck around, there are certainly other options.  The possum is actually one good example of a more uniquely American critter.  I at least am pretty sure there's nothing call a possum or opossum (or related to those guys) native to Japan.  

Glad to see some interest.