Related Clues:

• Mole, for one
• Chinchilla, for one
• Mouse or beaver, e.g.
• Porcupine, for one
• Chinchilla or beaver, e.g.
• Natural nibbler
• Capybara or hamster, e.g.
• Lab test taker
• Porcupine, e.g.
• Muskrat or mouse
• Beaver, for one
• Mouse, e.g.
• Exterminator's target
• Rat or squirrel
• Capybara, e.g.