Zeno is twelve. He is a Yorkshire Terrier–Chihuahua who lives in a treehouse at the top of a hill in the Oregon fir woods. He has been sightless for four years.
You will not be able to see the house either. You'll sniff it into existence, one pulse at a time, and remember where things were.
Zoe walks with you. The drifting green scent shows the way to whatever you need next — breakfast, the water bowl, the slider, your own half of the couch.