Chasing the Shimmering Wall

I bolted past the table legs and skidded onto a bright, warm patch of sun! Right in front of me was a towering, see-through wall leading outside to leafy potted plants. I tapped it with a paw—clack! Solid air! Then, a fluttering brown leaf drifted past on the other side. I leapt up, paws pressing right against the cool glass, mouth wide open in astonishment. My antlers bumped the surface with a tiny clatter as I watched the leaf tumble away into the breeze. There is an entire world out there!