One of my sheps is dog aggressive so i never allow him of lead, hes fine with people just dogs and cats, i have tried to keep on walking and asking over people to put there dogs on a lead as they keep running over but most just say mines ok and dont bother to, i cant hold him as hes 8 stone when an off lead dog starts running towards him and not many people in this village keep there dogs on leads at all so now we drive over the moors every day so they get exercise as im usually holding two of them i cant walk round the streets where people just ignore me, and this is on a main st at that where cars are coming up and down all the time, but im trying my best to get him out of it but he has been bitten twice by JRS and once by another shep when he was a pup, i have him on a half check but he feels nothing when another dog goes for him, its quite upsetting really as some do just want to play but others are also aggressive .