Bella doesn't lunge or bark at strangers on leash. She only does it sometimes at the park but if the people approach she backs off. Zara is the one that does on leash and at the park she sometimes goes right up to the person. With Bella i think its just a socialisation problem and that's my fault - it was 11 years since the last puppy i had and i was only 11 at the time. Bella is my first just mine dog. Zara might be socialisation but its worse since she got chased out of a park by a dog and then hit by two cars. Oh and she did say she has had very scared dogs in her classes before. Oh and she is a member of http://www.apdt.co.uk/about_APDT.asp - this site is how i found her. And Bella is doing very well with her training isnt't she, shes suprising me how well and quick she is getting stuff. I've been doing more training in the garden and she seems more relaxed in the garden now too.