[That's a real good question. Maybe his sense of self-preservation is slipping in his old age.]

I always kind of wondered if maybe you were just running off to other people as a dog because I didn't walk you enough or something... I guess now I know that's not it.

[Anyway, back through the streets they go! She glances at him from time to time to see if it seems like he's remembering anything, but eventually, they wind up in front of her house. She puts her hands on her hips, expectant.]

...well, this is it! Does it jog your memory a little?