Warning from a guard dog

• [Stay out of my yard!]
• Doberman sound
• Worrisome sound for a mail carrier
• [This is very annoying]
• Sound of frustration
• [Stay back, human]
• Watchdog warning
• Watchdog's greeting
• Angry dog sound

Wiktionary Word definitions in Wiktionary
alt. A growl of anger or disappointment. interj. A growl of anger or disappointment.