You're all very lovely. Bill is a very exuberant, sociable dog - he has been since puppyhood. He is as delighted to see all the people he knows as he is to see the dogs (as @brushingboots can testify). That's one of the reasons I do try to make sure he gets to see friends; the absolute joy he gets from being with them is so palpable, you can almost bottle it. He has one friend who's a round little beagle and they take such delight in each other, muzzle licking and sharing water from the same bottle at the same time, two noses shoved in together, then wrestling and teasing each other and chasing each other round the field. It really fills the heart to watch them. I want that joy for him, and that's why I've been so worried about the loss of his two besties in the context of his struggles with strange dogs.
The other things that feed into it are about me I suppose. Firstly that I've nothing to compare Bill to as we never had a dog growing up and Bill's my first. I moved up to this city four years ago on my own and all my friends and family live more than an hour away, and Bill struggles with the car, so any visions of taking him off to see people have had to be parked; and when he was tiny, getting him out to the little dog park we can see from our window was a lifeline. I've made dog park/dog walking friends that have become real friends; and it's plugged me into the neighbourhood and local community. We are still doing 1-1 training - our next session is Saturday - and I've been taking him up to the allotment at lunchtimes and plan to take him further afield next week, so we will start expanding our horizons, but I still value what we have locally, and don't want to lose it, I suppose.
Having said all this, we popped up to the park this evening on the way to our usual quiet evening mooch around the cemetery as I spotted some of his favourite dogs were there, and he coped for nearly an hour in the end with a five month old chihuahua. Bill was on a lead, obviously, and I kept our distance from the puppy as it was tiny, but apart from some fixation, Bill did incredibly well - a couple of lunges to get closer but no roaring or barking, and he spent an awful lot of the time ignoring its existence (not least as he found a whole football in the hedge and managed to haul it out with his teeth) - which is a tiny, bite-sized (chihuahua-sized?) bit of hope 🙂