After about an hour of walking (maybe three miles, Guy thinks, but probably less) he notices Jasper's limp.

And sighs. Because he really should have picked up on that sooner.

He halts, setting the pack on the ground, and pushes Jasper back, so he's sitting on a log. Crouches before Jasper's left leg, and runs a hand up his calf, sending a questioning glance up Jasper's way.