Hello

As I said in my intro we have 5 dogs, 4 girls and 1 boy. The girls are all great no problems with any of them. They range in age from 10 to 3. Our boy [our pup] is aged 16 months. He is great too - the only problem we have with him is in the car. He has become over protective and if anyone passes the car and he is in it, he barks in a very aggressive manner at them. We have never had this before in all the years we have had dogs so any advice would be helpful.

D