Behaviour modification is a specialist area, and differs from dog obedience problems. Many factors need to be taken into account. Early experience, socialisation, environment, diet, medical conditions, and training can all contribute to problem behaviour.
Therefore a detailed history of the problem is the first step to an accurate diagnosis. As each dog is genetically different and has had different experential learning, it is important that correct diagnosis of the problem and appropriate behaviour modification techniques are identified. Therefore it is important to seek professional advice from a qualified Behaviourist.