Arthur, it turns out, struggles to sleep in winter. As good as his apartment is in downtown, it's still achingly cold, in a way that makes him limp reluctantly through the kitchen to stoke the hearth back to life. Going outside isn't going to fucking help with it, of course, but at least getting moving always helped him feel more himself.

So when he starts wandering the streets, rubbing his arms tightly to try and get his circulation going, he spots the horse.

And there's absolutely no way in hell he'd just leave that be. So of course he's walking towards it immediately.