Related Clues:

• Generic dog bark
• Mastiff warning
• 'Gimme some Alpo!'
• Warning sound, perhaps
• "Wanna go out?" response
• 'Wanna go out?' response
• Sound from Rover
• Greeting at a dog park
• Alternative to 'Woof!'
• 'I'm mad!'
• Dog park noise
• Lab warning?
• 48-Across sound
• ''I hate that!''
• [Stay back, human]