To train an aggressive dog, it’s essential that you show it that you’re the leader of the pack. Start taking it on a walk every day, and never let it walk in front of you. It should walk beside or behind you. This gives the dog a clear message that you are in charge, and that it is not. It is absolutely vital that a dog knows it’s not allowed to make its own rules! Make sure that the dog gets plenty of exercise every day, according to its breed’s needs. For further advice about handling an aggressive dog, consult a dog trainer in your area.