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Avoidance of a problem behavior is essential until you can seek qualified help, particularly in a case of aggression. With treatment it may be possible to reduce the aggressive behavior, but avoidance is the key in minimizing danger. Avoidance does not mean that the pet has control, or that you are giving in to the dog. Instead, it may help extinguish the aggressive behavior. Every time a dog becomes aggressive, it learns that aggression may help it cope with the situation, thus reinforcing the problem.