Bella is beginning to make an attempt to chase cars, its been on three occations. We live in a residental area with cars usually in the evening hours as people return from work. I think its either a color thing or certain motor sound, i am going to take better notice if it happens again. I began early with her on walks always sitting at every corner and every alley way and also when cars go by i started saying "stop, sit" and now when she is on her long training lead i can shout a firm stop and she will follow with a sit. I had questioned myself on wether doing the sit every time a car passes is good or bad? Example: if she found herself in the middle of the street and a car approached what if she just stopped and sat right in the street? My gut still tells me its the right thing even though i have that tiny fear. Any thoughts on that? I take her out in the yard every evening at 6 pm on her 20 training lead and we play and watch the cars pass and we stop and sit. Yesterday was one of the chases.. i put my foot on the lead which brought her to a scretching stop and i shouted stop sit and she got real sheepish look.. maybe just maybe something sunk in at that moment.