Related Clues:

• Chew like mice do
• Make like a rodent
• Chew away (at)
• Champ takes one out in Munich
• Make mouseholes, maybe
• Eat like a chinchilla
• Agitate (with "at")
• Chew like chipmunks
• Use one's incisors
• Act like a rat, say
• Attack a chew toy
• Looking back, wife and girlfriend wrapped last of muffin to nibble on
• Work, as a bone
• Champ artist
• Worry, with ''at''