hes 7 yr olds and is neatured.He certainly not scared when on lead as the reaction is the same on or of lead.We used to have a pub and there was no problem with other dogs then even when other dogs went for him.He would just walk away and not go near them.Im inclined to think its a protection issue and that iv made it worse by going into a panic on seeing another dog and he reacts to that now.Iv tried to stay calm and in control but its not easy when i know whats gonna happen.Thinking back there was an incident where he was attacked by a mastif but im not certain this was when his behaviour changed.We love him reguardless and are very carful not to allow him the chance to hurt another dog, its just a shame.