Related Clues:

• Mutt's warning
• Shepherd's warning
• Sandy's response
• Response to ''Speak!''
• Cork, actually
• Lab output?
• Bowwow's cousin
• Word from Sandy
• Dog's word
• [Don't make me bite you!]
• Sound of frustration
• Terrier's bark
• Bark noise
• Say ''Arf!''
• It may act as an intruder alert