Walter forces himself to stop moving and think: what can he do to calm this dog down and make him willing to go back home?

"Can't imagine what you'd be coming over here for," he says still wondering at himself over talking at the dog, slowly walking back to lean on the door.

"But aren't you more likely to find it at home? And if your family's noticed you're gone, they're probably worried."

'Home' and 'Family' are the keywords he hopes get through, here.