Clive you could try distraction with a high value treat making your dog sit and tell him to "Leave" while the dog passes. It will take a while and doesn`t work for all dogs but worth a try.
As in devices when i took my Rottweiler to training there was a dog there who was dog aggressive. The trainer had a remote control collar that you can put on your dog and when you press a button it gives the dog a squirt. He tried it on the aggresive dog and it worked a treat. They`re not cheap at
As in devices when i took my Rottweiler to training there was a dog there who was dog aggressive. The trainer had a remote control collar that you can put on your dog and when you press a button it gives the dog a squirt. He tried it on the aggresive dog and it worked a treat. They`re not cheap at