Related Clues:

• Boxer's warning
• Imitate an angry dog
• Cur's sound
• Snarl
• Boxer's growl
• Watchdog's sound
• Knot in a tree
• Angry growl
• Growl
• An angry dog might do it
• A kind of knot
• Make a snarling sound
• Sound like an angry dog
• Sound steamed
• Growl, old-style (or backward, pealed)