Related Clues:

• "Grrr!" is one
• Angry dog's warning
• Speak harshly
• Guard dog's warning
• Lock problem
• Angry dog's sound
• Angler's headache
• Rush-hour hassle
• Collision of several cars
• Multiple car collision
• Multiple cars in road crash
• Multiple vehicles in road crash
• String entanglement
• Tangle of hair
• Copy a cur