Related Clues:

• Contemptible fellow
• Cowardly fellow
• Mutt
• Growler
• Worst in show, perhaps
• Canine, e.g.
• Mosquito, e.g.
• Dogcatcher's prey
• Word with nail or back
• Asp, at times
• Junkyard canine, perhaps
• Nasty dog
• Dogcatcher's quarry
• Mixed breed
• Pernicious pet