Related Clues:

• Corgi's cry
• "Woof" alternative
• Fido's response
• Kin of 'ruff!'
• Remark from 43-Down
• Boxer's comment
• [How exasperating!]
• Advice from 57-Across?
• Rottweiler's remark
• Boxer's cry
• Collie's comment
• Sound that a muzzle muffles
• Sound from a pound
• [Damn, this is frustrating!]
• Warning to the mailman