Aggressive dog training is a complex process that requires a combination of techniques and approaches to address the underlying causes of the aggression. Here are some techniques commonly used in aggressive dog training:

1. Desensitization and counter-conditioning: This technique involves exposing the dog to the stimulus that triggers their aggressive behavior in a controlled and gradual manner while rewarding calm behavior. For example, if a dog becomes aggressive when they see other dogs, the trainer may gradually introduce the dog to other dogs from a distance and reward calm behavior with treats and praise.
2. Management: Management techniques involve controlling the dog’s environment to prevent aggressive behavior from occurring. This can include using barriers or leashes to separate the dog from potential triggers or avoiding situations that trigger aggressive behavior.
3. Positive reinforcement: Positive reinforcement involves rewarding desirable behavior with treats, praise, or other rewards. This technique can be used to reinforce calm behavior and teach the dog alternative behaviors to replace aggressive behavior.
4. Clicker training: Clicker training involves using a clicker to mark desirable behavior and reward it with treats or praise. This technique can be used to reinforce desirable behaviors and teach the dog alternative behaviors to replace aggressive behavior.
5. Medication: In some cases, medication may be prescribed by a veterinarian to help manage the dog’s aggression. This may be used in conjunction with other training techniques to address the underlying causes of the aggression.
6. Counter-attack training: This technique involves training the dog to defend itself against an attacker. While controversial, this technique may be used in situations where the dog is at risk of being attacked and cannot be safely managed in other ways.

It is important to note that aggressive dog training should always be approached with caution and should only be undertaken by a qualified professional with experience in dealing with aggressive dogs. Improper training techniques or inexperienced trainers can exacerbate the problem and make the situation more dangerous for both the dog and those around it.

In conclusion, aggressive dog training requires a combination of techniques and approaches to address the underlying causes of the aggression. Techniques such as desensitization and counter-conditioning, positive reinforcement, clicker training, management, medication, and counter-attack training may be used depending on the individual dog’s needs and situation. Working with a qualified professional is essential to ensure the safety and well-being of both the dog and those around it.