We have a four year old Blue heeler. Is the BEST dog anyone could ask for. Obedience is great- Only problem we can't seem to correct is when he is in the car. He has separation anxiety(He was also a rescue dog which I think may be the cause). When we leave him in the car/truck to grab a pop-or even just to put gas in the car he carries (barking and howling) on the entire time. I don’t want to put a shock collar on him- we need another way. Also, when he is in the car he barks and cries when we start to slow down jumps from the back seat to the front (gets way too excited that we are about to stop and play) its ear-piercing and I don’t know how to correct a behavior that is from excitement. We are about to get another heeler. I think that he will be a great example to a younger puppy--but I don't want him teaching this bad habit.