Related Clues:

• Watchdog's warning
• Boxer's warning
• Warning sound
• Grumble
• Dog's warning
• Sound of an empty stomach
• Emulate an empty stomach
• Snarl
• Watchdog warning
• Guttural utterance
• Sound of an angry dog
• Attack dog's sound
• Dog's danger signal
• Sound of peke unease?
• Talk angrily