North American name for a ground squirrel — a resident of Minnesota (6)
I believe the answer is:
gopher
(Other definitions for gopher that I've seen before include "Rodent - wood of Noah's Ark" , "Burrowing rodent of north and central America" , "American burrowing rodent or ground squirrel" , "Burrowing animal - kind of wood" , "US ground squirrel" .)