I don't know. Blind cats can learn stairs. Thor from Tiny Kittens is a blind cat, and he did well, could even climb cat trees. Just depends on the cat really. I would certainly take time to teach the cat how to navigate stairs, but it's certainly possible.

Ah, the stairs we can't do anything about, but we will be putting wood or something else in the railing spindles so they can't fall out.

I'm curious about the bells on the collar, though. The nearly-blind one has bells on her collar so the eyeless one can hear where she is.

Good tips on the squeaky toys - I'd ordered a bag full of noisy things from Amazon and they seem to love it so far. They make a variety of sounds and we've been shaking/wiggling them so they can hear the sounds from a distance.

And thanks for the rest. We're trying to give them several hours each day alone so they can relax and map out the floor on their own schedules, and without distractions or anything anxiety-producing from us.

We'll be going to our trailer in the summer, which means mapping out a new area. Do you have any advice on how to make that transition as easy as possible? Like, are anxiety-reducing things (sprays, pills, etc) a thing for people, or just animals? We'll be putting familiar blankets in the cat carrier on the way up so they can smell that, and trying to bring as much from home as possible so they have some familiarity there.

I heard that!