Related Clues:

• Oregonian
• See 46-Across
• Theodore, more familiarly
• Eager one?
• Semi-aquatic rodent
• Industrious sort
• Large rodent
• Jerry Mathers role
• Dam builder
• ''Eager'' animal
• Image on our 5 cent coin
• Title boy in an old sitcom
• Dam-building beast
• Amphibious animal, lives in lodge
• Animal with brown fur, builds dams