Possible Clues:

• Woodchuck's cousin
• Large burrowing rodent
• Groundhog, e.g.
• Did little Thomas butt it back like a dog of the prairie
• Two male animals returned for another animal
• The rodent will spoil the boy up here
• Rodent damage? Test needed in the end
• Stout, burrowing rodent
• Spoil test with rodent
• Small burrowing animal of the squirrel family