Hi! I have an 11mth old G.S.D. bitch who while on the lead, shows aggression towards other dogs. This is quite a big problem as she is a show dog, and it is very stressful for me while in the ring, as she wants to lunge at the other dogs, especially while gaiting, which prevents me from showing her normally,excellent movement, as I am having to restrict her movement , to keep her out of reach of the other dogs. The problem does seem to be mainly while on the lead, as she has met other dogs while off lead and has shown no aggression, just boisterous playfullness. The bitch is from 'high drive' lines, and is a very active puppy, both mentally and physically, she is very sharp, quick to learn and eager to please. I can't work out if her aggression is fear or boldness. She is not a timid puppy, she has always been a very confident puppy, a 'showy' puppy, who has great ring presence, which is spoilt by her aggressive behaviour. I also have an 8yr old G.S.D. dog, and a 6yr old G.S.D. bitch. The bitch is top dog, as the dog is far too laid back, so the older bitch, being more dominant, took role of top dog. When we introduced the puppy, who was 12wks at the time, the older bitch constantly followed her every move in a very intimidating way, making it known that she was in charge. As the puppy got older, there were a few battles of 'wills' between the two bitches, which led to quite a nasty nip off the older bitch, which frightened the puppy. The puppy has accepted that 'Sasha' is top dog, and always shows submissive behaviour to her, but the puppy will then show domination over the dog, who she see's as lower than herself in the pack. I feel the older bitch's behaviour towards the pup is the root of the problem, possibly because she has been dominated by 'Sasha', 'Inka' then tries to dominate other dogs. Or she is warning other dogs to stay away as she doesn't want to be 'picked on' the way 'Sasha' has done. Inka goes to regular ringcraft, to socialise, but she will not allow another dog within her personal space, without 'kicking off!' It is very frustrating and I would be very grateful for any help and advice, so I can sort the problem and enjoy showing her!