Spot's about to just say no when he realises what Ezra's actually asking. He glances sideways at him and frowns thoughtfully for a moment.

"I have to go home in a bit... but maybe I'll feel like a walk after dinner." he says casually - quiet enough that nobody else overhears it. He can almost certainly get away with that since his father's out of town, and he can think of a dozen places he might go 'walking' without being disturbed.