Related Clues:

• "The Wind in the Willows" critter
• One down in the dumps?
• Certain stowaway
• Turn state's evidence, maybe
• Caduceus animal
• Sidewinder, e.g.
• Frequent lawbreaker on 'The Simpsons'
• One who squeals
• "Was it a ___?" "Yeah, a great big one" (line from "L.A. Confidential")
• Slum scurrier
• Mafioso informer
• Wind around
• Vole relative
• Pack __
• Viper for one