Related Clues:

• Shepherd's warning
• Cry of frustration
• [Don't make me bite you!]
• Sound of frustration
• Frustrated outburst
• "Better stay out of my yard!"
• Doberman sound
• Pooch's warning
• Pit bull's warning
• Mutt's sound
• Weimaraner's warning
• [Stay the fuck away from this scrap yard]
• Sound sometimes followed by an attack
• Lab alert?
• Frustrated sound