Aggressive Dog Meeting New Dog

Question
We have a 16 1/2 year old Lhasa Peke mix and a 7 year old Boston Terrier. My Lhasa is very fragile, has many health problems but is very social towards dogs. Our Boston seems aggressive towards other dogs, barking when looking out the window etc. I got afraid to walk him because of his pulling on the leash & snorting..lol  He is not ppl aggressive.Now the real problem....we came upon a site in Ga. where they gas dogs & we had to save as many as we could. We had a friend in Ga. pull a Pointer mix for us who everyone passed by and who was due to be gassed the next morning. Our friend drove the Pointer from Ga. to NC to our vets. I wanted her fully vetted. She is around 1 1/2 years old, neg heartworm, no worms of any kind and such a SWEETIE! She's being boarded now at the vets until I can figure out a way to introduce these dogs.Our Boston is full of energy. We've started really walking him alot every day, as long as no other dogs are around. If another dog came up[especially lose] I don't know what he would do. We plan on introducing the Pointer[spayed female] to the Boston on Thursday, by walking them wide apart with my daughter walking the Pointer & me with the Boston until we get closer & closer.Do you think this will work? This girl is our Christmas miracle. Please any advice would be appreciated. Yes, I know about treats....the closer the Pointer to the Boston, keep shoving in the chicken..lol

Answer
I think parallel walking dogs at a distance (and very gradually closer) is a terrific way to introduce dogs. I'd also try to do it on neutral territory. I can't say if this is true of your little Boston or not, but a lot of dogs have barrier frustration and leash frustration, so that they look and sound fierce when there is another dog they can't get to, and frequently when they are not behind a barrier or on leash, that behavior decreases or goes away. Many dogs who are very inappropriate on leash, are quite appropriate off leash. Not all, of course, but many. If you can find a good trainer to work with you on the introduction, that would be very useful, and might help calm some of your fears (sometimes normal dog interactions make people very nervous, and if you are feeling nervous and reactive about it, your dog will pick up on that. Of course, I'd give the Boston lots of treats when the Pointer in in the room (and also ask him to give you some obedience to keep him from getting into reactive mode) and when she's not in the room ignore him a little. So, new dog = treats, no new dog = not so much good stuff. One really wonderful game I've found is Leslie McDevitt's (Control Unleashed) "look at that" game, where you ask the dog to look at something (at a distance, so he's able to think) and immediately click and treat (which means he would need to learn that a clicker means A) I like that! and B) I'll give you a treat for that!) You would ask him to look at something - in this case another dog, and click and treat him before he has time to build to a reaction. This changes the situation from one where he is thinking about reacting to the dog, to one where he learns to look at the dog as a game with you that gets him treats. It is very, very effective, and you might see if you can find this book (Control Unleashed) or "Click to Calm" by Emma Parsons. I wouldn't leave them together unsupervised until I was pretty sure things were going smoothly. I wish you very good luck, and it sounds like you are HER Christmas miracle!