Hi I have a 5 year old British bull dog that we have fostered from a dogs home. He is a very calm and a happy dog with no real issues. He has enjoyed his two daily walks and a good run on the field with his ball. On Bonfire night he had a dislike to fireworks. Since then taking him out for walks has a been a nightmare, we don't know if it is because it is getting darker earlier and cars putting the lights on as he is now chasing car light and chasing after cars making it really difficult to take him out. We have introduced firework sounds for him to listen to and has adapted quite quickly to the noise but we are not sure if he has a fixation with lights or if it has been the fireworks that has stated the problem. How do we stop him chasing after cars and car lights.