Related Clues:

• React like a threatened dog
• Comb's target
• Traffic jam, e.g.
• Become clogged
• Tangled mass
• Wolf's warning
• Freeway problem
• Mongrel's warning
• Possible result of an accident
• Tress distress
• Cur's warning
• Complicate
• Obstruct, as a copier
• Problem fixable with a comb
• Become entangled