Oscar is actually 11 months now but it seems to only have been in the last couple of months he's started to do this. I've just been out for a walk with Oscar and he terrified a guy walking on his own - he just doesn't seem to know what to do with someone if they haven't got a dog with them.

He just seems to start barking at them and bounding forward and then away a couple of steps, the guy looked absolutely terrified and I had to pull Oscar away from him. I don't think it is aggression as he is normally so excitable and friendly but it's getting embarrassing now.