Related Clues:

• "Willard" creatures
• "Dagnab it!"
• Lab animals
• Two-timers
• Cry from Charlie Brown
• Pied Piper's followers
• Hamelin evictees
• Lab-maze runners
• Relatives of mice
• Charlie Brown's ''Darn!''
• "I'm so frustrated!!!"
• Charlie Brown cry
• Exasperation exclamation
• 'The Secret of NIMH' figures
• "Peanuts" expletive