My pretty newly blind 3 year old Grey, Polar, really dislikes a dog in my condo bldg. It makes it very difficult to be walking the halls or outside on a walk and run into this other dog and owners. Polar just automatically reacts very negatively toward this Vizsla and I swear can smell him or sense him from 30 feet away. He will start jumping in front of me, barking, and I react by usually stopping, telling him to calm down, and hold him by the collar. Their dog has not barked lately, but is just straining as well to get over to us. What is the best way to deal with this situation. I usual