Related Clues:

• Runner of an experiment?
• Chinese zodiac beast
• Large rodent
• Inform on
• Long-tailed rodent
• State secrets?
• Mob target
• Something often smelled
• Turn informer
• Ninja Turtle mentor Splinter, e.g.
• Bean-spiller
• Alley dweller
• Disloyal one
• Snitch, slangily
• Dirty double-crosser