He looks like a darling, right at home, knowing he's hit the jackpot. We have 2 rescues, sisters, one half blind, and they're the most affectionate little girls you can imagine. They obey voice commands immediately, don't react if we meet other dogs and walk to the grass verge when they see a car approaching, so we don't have to leash them. I can't imagine they'd be too fond of fireworks though since recent thunder sent them scurrying under the bed.
Your 'sisters' sound like perfect pets :) I think pets often reflect the personality of their human companions. Of course they are good, and intelligent 😇
I hope the future shows a dog developing with a benign character. Who knows? We once had a biter and that was really, really hard😁