The dog just notices a small child dressed in rags leaning against the wall, seemingly in pain. "...Sosternuto? I don't know if this really matters, but there's a kid just outside."
The noises. They were so... annoying. Maybe he should just quiet them himself. Then there would finally be peace. But, no. He couldn't do that. Instead he allowed himself to be overcome by his drink; allowing his memories -- and worries -- to momentarily disappear.
The dog snaps his powerful jaws around the chains and starts to pull. After a few seconds one of the links in the chain bends and then the chains start to unravel.