Related Clues:

• Common test subject
• Weed eradicator
• Drug enforcement agent
• Buster with a badge
• Pusher's foe
• ''French Connection'' cop
• Muppet Rizzo, e.g.
• Hunter of snow movers?
• Plague carrier
• Dirty dog
• Nocturnal rodent
• Untrustworthy one
• Lab maze runner
• DEA worker
• Untrustworthy sort